{"id":219913,"date":"2025-10-12T11:36:08","date_gmt":"2025-10-12T16:36:08","guid":{"rendered":"https:\/\/gunsamerica.com\/digest\/?p=219913"},"modified":"2026-10-18T15:53:54","modified_gmt":"2026-10-18T20:53:54","slug":"maztech-x4-fcs-fire-control-system","status":"publish","type":"post","link":"https:\/\/gunsamerica.com\/digest\/maztech-x4-fcs-fire-control-system\/","title":{"rendered":"Maztech X4-FCS Review: How the Fire Control System Works"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>What is the Maztech X4-FCS? It is an LPVO mount with a built in Applied Ballistics solver and environmental sensors that projects a live, compensated aiming point inside your scope. In our test it walked a 16 inch 5.56 close at 1,400 yards and held zero after 30 miles of rough trail.<\/strong> Inside 300 yards it adds little, and at $3,495 for the FCS alone it is a hard sell for most civilians.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Specs and verdict first, then Mitchell Graf&#8217;s review.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Maztech X4-FCS overlays a live, digital reticle with real-time ballistic holds inside your LPVO. We ran it with and without the X4-LRF to see how far this $3,495 fire control mount can stretch hits.<\/p>\n\n\n\n<div class=\"wp-block-yoast-seo-table-of-contents yoast-table-of-contents\"><h2>Table of contents<\/h2><ul><li><a href=\"#h-maztech-x4-fcs-specs\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\" data-level=\"2\">Maztech X4-FCS Specs<\/a><ul><li><a href=\"#h-verdict\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\" data-level=\"3\">Verdict<\/a><\/li><\/ul><\/li><li><a href=\"#h-faq\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\" data-level=\"2\">FAQ<\/a><ul><li><a href=\"#h-what-is-the-maztech-fcs\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\" data-level=\"3\">What is the Maztech FCS?<\/a><\/li><li><a href=\"#h-does-the-x4-fcs-need-the-x4-lrf\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\" data-level=\"3\">Does the X4-FCS need the X4-LRF?<\/a><\/li><li><a href=\"#h-how-much-is-the-maztech-x4-fcs\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\" data-level=\"3\">How much is the Maztech X4-FCS?<\/a><\/li><\/ul><\/li><\/ul><\/div>\n\n\n\n<h2 id=\"h-maztech-x4-fcs-specs\" class=\"wp-block-heading\">Maztech X4-FCS Specs<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><\/th><th>X4-FCS<\/th><\/tr><\/thead><tbody><tr><td>Type<\/td><td>LPVO mount with HUD and Applied Ballistics solver<\/td><\/tr><tr><td>Sensors<\/td><td>Temperature, pressure, humidity, pitch, roll, heading<\/td><\/tr><tr><td>Fits<\/td><td>Most 30mm LPVOs; 1.93 in height tested<\/td><\/tr><tr><td>Weight<\/td><td>22.6 oz with batteries<\/td><\/tr><tr><td>Power<\/td><td>Two USB-C 18650s or four CR123s; about 520 hours claimed<\/td><\/tr><tr><td>MSRP<\/td><td>$3,495 (FCS only)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 id=\"h-verdict\" class=\"wp-block-heading\">Verdict<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Good:<\/strong> real time holds in the glass, configurable display, strong battery life, works without an LRF, held zero.<\/li>\n<li><strong>Know this:<\/strong> high price, LPVO limits spotting at long range, power button can be bumped on, little benefit inside 300 yards.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Adding a rangefinder? See our <a href=\"https:\/\/gunsamerica.com\/digest\/maztech-x4-lrf-review\/\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\">Maztech X4-LRF review<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Background on the system: <a href=\"https:\/\/gunsamerica.com\/digest\/x4-system-by-magpul-maztech-shot-show-2022\/\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\">the X4 system by Magpul and Maztech<\/a> and Maztech&#8217;s <a href=\"https:\/\/gunsamerica.com\/digest\/maztech-x4-lrf-ir-illuminator-shot-show-2026\/\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\">X4-LRF IR illuminator<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/gunsamerica.com\/search?keyword=Maztech\" campaign=\"maztech-fcs\" target=\"_blank\" class=\"clickTracking\">&#x1f6d2; Check Current Price for rifle scopes on GunsAmerica<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Meet the X4-FCS: LPVO HUD With Real-Time Holds<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Maztech X4-FCS, or Fire Control System, is an ambitious optics accessory. Rather than being just a mount, it acts as a full fire control system for your preferred LPVO. By combining onboard environmental sensors with ballistic data, the X4-FCS overlays a real-time digital reticle inside your scope. The result is an aiming solution that adapts to your rifle, ammunition, and conditions on the fly.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131-1024x683.jpg\" alt=\"Maztech X4-FCS mounted to a 30mm LPVO showing HUD overlay and compact housing\" class=\"wp-image-219914\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131-1024x683.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131-1536x1024.jpg 1536w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131.jpg 1554w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Maztech designed the X4-FCS to integrate with most 30mm LPVOs. At $3,495, this is not a casual purchase, and pairing it with one of Maztech\u2019s laser rangefinders unlocks its full potential. Even so, the concept pushes rifle technology into new territory.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-it-works-sensors-solver-instant-dope\"><strong>How It Works: Sensors, Solver, Instant Dope<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The X4-FCS houses an Applied Ballistics solver and sensors for temperature, pressure, humidity, pitch, roll, and heading. By entering your rifle and ammunition data, the system calculates a ballistic solution and projects a compensated aiming reticle into your optic. It also shows your real-time heading and cant, depending on what you choose to have displayed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3136-1024x682.jpg\" alt=\"Through-the-scope view of Maztech X4-FCS HUD overlay with thermal clip-on attached\" class=\"wp-image-219915\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3136-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3136-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3136-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3136-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3136.jpg 1328w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">This is what it looks like through the scope with a thermal clip on.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Zeroing is handled like any traditional scope. Once the optic is zeroed, you move the digital overlay to match your crosshair position. From there, the system provides precise holdover and windage information.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The onboard display is daylight-readable and highly adjustable. I found the menus and controls intuitive enough that I hardly needed the manual. The button layout works well from behind the rifle, and the rotary knob gives positive clicks for navigating menus and settings. While the included manual is short and sweet, the full 100-page version is available online for those who want to deep dive into every aspect of this system.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3158-1024x682.jpg\" alt=\"Maztech X4-FCS menu screenshots showing configurable HUD and options\" class=\"wp-image-219926\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3158-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3158-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3158-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3158-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3158-1536x1024.jpg 1536w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3158.jpg 1736w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Pictures of different menu options. The display is crisp in person; distortion is from my camera.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-in-use-weight-controls-brightness-custom-hud\"><strong>In Use: Weight, Controls, Brightness, Custom HUD<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Running the X4-FCS with a Trijicon Credo 1-6 FFP mounted in the 1.93 inch model, I appreciated how little bulk the system added. At 22.6 ounces with batteries, it brings some weight but doesn\u2019t feel cumbersome on the rifle. Button placement is ergonomic for right-handed shooters.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3141-1024x683.jpg\" alt=\"Left-side view of Maztech X4-FCS housing with buttons and rotary menu dial\" class=\"wp-image-219916\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3141-1024x683.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3141-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3141-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3141-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3141.jpg 1449w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">The only buttons and menu dial are on the left side of the housing.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">One of the coolest features is how customizable the display is. Users can move and resize icons, tailoring the sight picture to preference. Even without a paired LRF, I quickly dialed distances from a handheld rangefinder and let the system generate real-time holdover data. The overlay works cleanly up to about 55 MILs of elevation before running off the display. Beyond that, the system still provides the MIL or MOA values for elevation and windage, though it no longer shows the hold visually in the glass. For fun, I entered a max range of 5,500 yards with a 55-grain 5.56 profile, and the software kicked back 40,754.20 MILs of elevation. Not a realistic shot, but it shows the solver\u2019s capability.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3145-1024x683.jpg\" alt=\"X4-FCS ballistic calculator showing extreme elevation hold example\" class=\"wp-image-219917\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3145-1024x683.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3145-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3145-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3145-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3145.jpg 1332w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">My calculated hold for a 5,500-yard shot using 55-grain PMC.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Brightness is another area Maztech got right. The display cuts through glare on bright days with reflective backdrops, yet it dims low enough for night use with a thermal clip-on.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3148-1024x682.jpg\" alt=\"Night shooting through LPVO with Maztech X4-FCS and clip-on thermal\" class=\"wp-image-219918\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3148-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3148-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3148-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3148-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3148-1536x1024.jpg 1536w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3148.jpg 1745w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Two shots through the scope at night with a clip-on thermal.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ergonomics are solid overall, with well-placed buttons and a rotary knob that delivers crisp tactile feedback. The only downside is the power button, which can be bumped accidentally and turn the unit on, draining the battery if you do not notice. Battery performance itself is strong. The system runs on two rechargeable USB-C 18650s or four CR123s, with a claimed runtime of a year at 10 hours per week. That equates to 520 hours. It also has shake awake and auto off to preserve battery and wake instantly when needed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3139-1024x682.jpg\" alt=\"Maztech X4-FCS power system with twin 18650 batteries installed\" class=\"wp-image-219919\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3139-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3139-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3139-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3139-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3139.jpg 1496w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Powered by two 18650 batteries, the X4-FCS runs for approximately 520 hours.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-performance-inside-300-it-s-marginal-past-that-it-shines\"><strong>Performance: Inside 300 It\u2019s Marginal, Past That It Shines<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In practice, the X4-FCS feels like a real force multiplier, especially for shooters without deep ballistic knowledge. After a few minutes of entering rifle and ammo data, the system generated holds that let me push a 16-inch 5.56 well past its comfort zone. At 1,400 yards, cheap bulk ammo kept us from ringing steel, but the FCS walked us close enough to prove the concept.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3150-1024x682.jpg\" alt=\"Shooter working a 16 inch 5.56 to 1418 yards using the X4-FCS overlay\" class=\"wp-image-219920\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3150-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3150-400x266.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3150-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3150-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3150-1536x1023.jpg 1536w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3150.jpg 1659w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Shooting out to 1,418 yards with a 5.56.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Within 300 yards, the advantage is limited. With a standard 50\/200-yard zero, a 5.56 stays inside a six-inch vital zone, making the digital overlay more novelty than necessity. Past that, the X4-FCS comes into its own. It eliminates guesswork, bypasses BDC limitations, and provides precise solutions tailored to any rifle and ammunition combination where traditional etched reticles fall short.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pairing with an LPVO does create limitations. LPVOs are fast from close to midrange but are not ideal for spotting or engaging tiny targets at distance. In testing with the Credo 1-6 FFP, the system worked well, but I could barely see my steel silhouette past 1,000 yards. Still, the FCS put me close at 1,400 yards while bulk ammo danced around the target.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It can feel like the scope is now the limiting factor, which speaks to the strength of the onboard ballistics. This system gives shooters the ability to make good shots in the 300-800 yard band. Paired with 6mm ARC or a large-frame gas gun, bullets become more capable at extended distance. It is not a replacement for a precision rifle. It is a tool that extends the usability of standard rifle systems.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3149-1024x682.jpg\" alt=\"Spotter and shooter team using Maztech X4-FCS to stretch an AR on steel\" class=\"wp-image-219921\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3149-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3149-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3149-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3149-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3149.jpg 1436w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Spotter watching to see how far the X4-FCS can help stretch an AR.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-practical-notes-mounting-ecosystem-backup-ranging\"><strong>Practical Notes: Mounting, Ecosystem, Backup Ranging<\/strong><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Maztech includes plenty of thoughtful details. The torque specs for the rings and base are engraved on the housing, so there is no manual hunting during mounting. The accessory kit includes two rechargeable batteries, USB-C cables, and a Bluetooth dongle. Maztech told me the dongle is for future use with the upcoming PC app if a PC lacks Bluetooth, and it also acts as a failsafe if app stores ever pull the companion app. Accessories such as remotes, diving board mounts, and the LRF expand the system further.<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3142-1024x683.jpg\" alt=\"Right-side of Maztech X4-FCS with environmental sensor callouts and torque specs\" class=\"wp-image-219922\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3142-1024x683.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3142-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3142-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3142-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3142.jpg 1351w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Environmental sensors and torque specs sit on the right side of the housing.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Maztech clearly intends the FCS to be the hub of a modular ecosystem. On its own it is powerful, but pairing it with a Maztech laser rangefinder unlocks full potential. The X4-LRF comes in 2K and 15K versions, ranging reflective targets to 2,000 or 15,000 meters and priced between $2,195 and $4,995. A short FCS-to-LRF cable ties them together. Once linked, the system provides exact ranges with precise holds updated in real time. A slick perk is how the FCS accounts for rifle cant. Even when the rifle is rotated, the digital reticle stays level to the horizon so your hold remains correct.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1366\" height=\"910\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3132-edited.jpg\" alt=\"Maztech X4-FCS paired with X4-LRF 15K on rifle for long-range ranging and holds\" class=\"wp-image-219924\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3132-edited.jpg 1366w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3132-edited-400x266.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3132-edited-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3132-edited-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3132-edited-768x512.jpg 768w\" sizes=\"(max-width: 1366px) 100vw, 1366px\" \/><figcaption class=\"wp-element-caption\">For most testing, I paired the X4-FCS with the 15K version of the X4-LRF.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">When the X4-LRF is connected to the FCS, I hit the range button and in less than a second the system applies an exact ballistic hold using live environmental data. Without the LRF, I can manually dial an estimated distance or input the range from a handheld rangefinder.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are also backup ranging features that keep the system useful without the LRF. An auto-adjusting BDC mode provides holds at 400, 500, 600, 700, and 800 yards, adapting to current environmental data and the selected rifle and ammo profile. The FCS also offers a static man-size ranging reticle and an adaptive digital ranging reticle to bracket a target and estimate distance.<\/p>\n\n\n\n<blockquote class=\"instagram-media\" data-instgrm-captioned data-instgrm-permalink=\"https:\/\/www.instagram.com\/reel\/DNyzrtC4sU2\/?utm_source=ig_embed&amp;utm_campaign=loading\" data-instgrm-version=\"14\" style=\" background:#FFF; border:0; border-radius:3px; box-shadow:0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width:540px; min-width:326px; padding:0; width:99.375%; width:-webkit-calc(100%, 2px); width:calc(100%, 2px);\"><div style=\"padding:16px;\">  <div style=\" display: flex; flex-direction: row; align-items: center;\"> <div style=\"background-color: #F4F4F4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;\"><\/div> <div style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center;\"> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;\"><\/div> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;\"><\/div><\/div><\/div><div style=\"padding: 19% 0;\"><\/div> <div style=\"display:block; height:50px; margin:0 auto 12px; width:50px;\"><svg width=\"50px\" height=\"50px\" viewBox=\"0 0 60 60\" version=\"1.1\" xmlns=\"https:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"https:\/\/www.w3.org\/1999\/xlink\"><g stroke=\"none\" stroke-width=\"1\" fill=\"none\" fill-rule=\"evenodd\"><\/g><g transform=\"translate(-511.000000, -20.000000)\" fill=\"#000000\"><\/g><g><path d=\"M556.869,30.41 C554.814,30.41 553.148,32.076 553.148,34.131 C553.148,36.186 554.814,37.852 556.869,37.852 C558.924,37.852 560.59,36.186 560.59,34.131 C560.59,32.076 558.924,30.41 556.869,30.41 M541,60.657 C535.114,60.657 530.342,55.887 530.342,50 C530.342,44.114 535.114,39.342 541,39.342 C546.887,39.342 551.658,44.114 551.658,50 C551.658,55.887 546.887,60.657 541,60.657 M541,33.886 C532.1,33.886 524.886,41.1 524.886,50 C524.886,58.899 532.1,66.113 541,66.113 C549.9,66.113 557.115,58.899 557.115,50 C557.115,41.1 549.9,33.886 541,33.886 M565.378,62.101 C565.244,65.022 564.756,66.606 564.346,67.663 C563.803,69.06 563.154,70.057 562.106,71.106 C561.058,72.155 560.06,72.803 558.662,73.347 C557.607,73.757 556.021,74.244 553.102,74.378 C549.944,74.521 548.997,74.552 541,74.552 C533.003,74.552 532.056,74.521 528.898,74.378 C525.979,74.244 524.393,73.757 523.338,73.347 C521.94,72.803 520.942,72.155 519.894,71.106 C518.846,70.057 518.197,69.06 517.654,67.663 C517.244,66.606 516.755,65.022 516.623,62.101 C516.479,58.943 516.448,57.996 516.448,50 C516.448,42.003 516.479,41.056 516.623,37.899 C516.755,34.978 516.244,33.391 516.654,32.338 C518.197,30.938 518.846,29.942 519.894,28.894 C520.942,27.846 521.94,27.196 523.338,26.654 C524.393,26.244 525.979,25.756 528.898,25.623 C532.057,25.479 533.004,25.448 541,25.448 C548.997,25.448 549.943,25.479 553.102,25.623 C556.021,25.756 557.607,26.244 558.662,26.654 C560.06,27.196 561.058,27.846 562.106,28.894 C563.154,29.942 563.803,30.938 564.346,32.338 C564.756,33.391 565.244,34.978 565.378,37.899 C565.522,41.056 565.552,42.003 565.552,50 C565.552,57.996 565.522,58.943 565.378,62.101\"><\/path><\/g><\/svg><\/div><div style=\"padding-top: 8px;\"> <div style=\" color:#3897f0; font-family:Arial,sans-serif; font-size:14px; font-style:normal; font-weight:550; line-height:18px;\">View this post on Instagram<\/div><\/div><div style=\"padding: 12.5% 0;\"><\/div> <div style=\"display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;\"><div> <div style=\"background-color: #F4F4F4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);\"><\/div> <div style=\"background-color: #F4F4F4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;\"><\/div> <div style=\"background-color: #F4F4F4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);\"><\/div><\/div><div style=\"margin-left: 8px;\"> <div style=\" background-color: #F4F4F4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;\"><\/div> <div style=\" width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg)\"><\/div><\/div><div style=\"margin-left: auto;\"> <div style=\" width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);\"><\/div> <div style=\" background-color: #F4F4F4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);\"><\/div> <div style=\" width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);\"><\/div><\/div><\/div> <div style=\"display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;\"> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;\"><\/div> <div style=\" background-color: #F4F4F4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;\"><\/div><\/div><p style=\" color:#c9c8cd; font-family:Arial,sans-serif; font-size:14px; line-height:17px; margin-bottom:0; margin-top:8px; overflow:hidden; padding:8px 0 7px; text-align:center; text-overflow:ellipsis; white-space:nowrap;\">A post shared by That_gun_guy_ (@that_gun_guy_)<\/p><\/div><\/blockquote> <script async src=\"\/\/www.instagram.com\/embed.js\"><\/script>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-who-it-s-for-civilians-night-hunters-military\"><strong>Who It\u2019s For: Civilians, Night Hunters, Military<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">At $3,495 for the FCS alone, plus another $2,195 to $4,995 for a matching LRF, this setup is a hard sell for most civilian shooters. Within 300 yards, it does not add much value. For hunting, I do not see myself using this for big game. It is neat for coyote hunting with a thermal clip-on because dialing elevation after dark is tricky. Having my holdover shown in the display is helpful. It also held zero great. I kept this rifle in the back of a side-by-side and drove over 30 miles on very rocky trails. While the X4-FCS rubbed a hole through the tool bag, it never lost zero.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3133-1024x682.jpg\" alt=\"Maztech X4-FCS field use on UTV ride after 30 miles of rocky trails\" class=\"wp-image-219925\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3133-1024x682.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3133-400x267.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3133-150x100.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3133-768x512.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3133.jpg 1454w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Checking the rifle system after time out on rough trails.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Where I see the X4-FCS excelling is in military applications. The ability to project a ballistic solution into a soldier\u2019s optic, combined with a ruggedized housing and modular accessories, could be a real force multiplier. It makes long-range shots accessible to shooters with minimal ballistic knowledge, allowing effective engagement at distances far beyond a standard etched reticle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>READ MORE:<\/strong> <a href=\"https:\/\/gunsamerica.com\/digest\/vortex-crossfire-green-and-red-dot-optics-review\/\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\" target=\"_blank\" rel=\"noreferrer noopener\">Vortex Crossfire Green and Red Dot Optics Review<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-final-thoughts-cutting-edge-pricey-surprisingly-capable\"><strong>Final Thoughts: Cutting-Edge, Pricey, Surprisingly Capable<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Maztech X4-FCS represents a big step forward in fire control tech. It is not cheap, and for many shooters it will not replace traditional optics or dope cards. But as a working product, it delivers. The system provided accurate holds and adapted to conditions in real time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For target shooters who want to experiment with cutting-edge gear, it is an impressive tool. For military use, it could matter a lot. Personally, I do not plan to purchase the FCS, but the companion LRF units show real promise on my bolt guns.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Maztech is pushing boundaries, and the X4-FCS is a glimpse of what rifle technology will look like soon.<\/p>\n\n\n<p>[ga_price_button id=&#8221;[ItemID]&#8221; text=&#8221;Check Price on GunsAmerica&#8221;]<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Maztech X4-FCS Specifications<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>Model<\/th><td>Maztech X4-FCS Fire Control System<\/td><\/tr><tr><th>Type<\/th><td>LPVO mount with integrated HUD and ballistic solver<\/td><\/tr><tr><th>LPVO Compatibility<\/th><td>Most 30mm LPVOs<\/td><\/tr><tr><th>Mount Height<\/th><td>1.93 inch model tested<\/td><\/tr><tr><th>Weight<\/th><td>22.6 ounces with batteries<\/td><\/tr><tr><th>Power<\/th><td>Two USB-C rechargeable 18650 or four CR123<\/td><\/tr><tr><th>Runtime<\/th><td>Approximately 520 hours at 10 hours per week<\/td><\/tr><tr><th>Notable Features<\/th><td>Daylight-readable display, shake awake, auto off, torque specs engraved, customizable HUD<\/td><\/tr><tr><th>MSRP<\/th><td>$3,495 (FCS only)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pros and Cons After Real Range Time<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pros:<\/strong> Real-time holds inside your glass, highly configurable HUD, strong battery life, works even without LRF, rugged enough to keep zero after rough travel.<\/li>\n\n\n\n<li><strong>Cons:<\/strong> High price, LPVO limits spotting at very long range, power button can be bumped on, marginal benefit inside 300 yards.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Related Reads from GunsAmerica Digest<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/gunsamerica.com\/digest\/maztech-x4-lrf-review\/\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\">Maztech X4-LRF Review<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gunsamerica.com\/digest\/maztechs-crazy-new-optoelectronics-shot-show-2024\/\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\">Maztech\u2019s Crazy New Optoelectronics<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gunsamerica.com\/digest\/cutting-edge-tech-maztechs-ballistic-rangefinder-shot-show-2025\/\" target=\"_blank\" class=\"clickTracking\" campaign=\"maztech-x4-fcs-fire-control-system\" title=\"Maztech X4-FCS Review: How the Fire Control System Works\">Cutting-Edge Tech: Maztech\u2019s Ballistic Rangefinder<\/a>&lt;\/<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-faq\" class=\"wp-block-heading\">FAQ<\/h2>\n\n\n\n<h3 id=\"h-what-is-the-maztech-fcs\" class=\"wp-block-heading\">What is the Maztech FCS?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">An LPVO mount with a ballistic solver and sensors that shows a compensated aiming point inside your scope.<\/p>\n\n\n\n<h3 id=\"h-does-the-x4-fcs-need-the-x4-lrf\" class=\"wp-block-heading\">Does the X4-FCS need the X4-LRF?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. You can enter ranges manually, but pairing an X4-LRF gives exact ranges and holds automatically.<\/p>\n\n\n\n<h3 id=\"h-how-much-is-the-maztech-x4-fcs\" class=\"wp-block-heading\">How much is the Maztech X4-FCS?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">$3,495 for the FCS alone.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the Maztech X4-FCS? It is an LPVO mount with a built in Applied Ballistics solver and environmental sensors that projects a live, compensated aiming point inside your scope. In our test it walked a 16 inch 5.56 close at 1,400 yards and held zero after 30 miles of rough trail. Inside 300 yards [&hellip;]<\/p>\n","protected":false},"author":137,"featured_media":219914,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_specdata_upc":"","_specdata_placement":"","footnotes":""},"categories":[7,109,3381,47,878],"tags":[102,108,4491],"featured":[],"hunt365":[],"class_list":["post-219913","post","type-post","status-publish","format-standard","has-post-thumbnail","category-gunsamerica-authors","category-gear-reviews","category-mitchell-graf","category-gear-optics-sights","category-gear-optics-sights-scopes","tag-feature-articles","tag-guns","tag-maztech-x4-fcs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.7 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Maztech X4-FCS Review: How the Fire Control System Works<\/title>\n<meta name=\"description\" content=\"Maztech X4-FCS review: what the fire control system is, how its ballistic HUD works in an LPVO, specs, battery life, and range results past 1,000 yards.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gunsamerica.com\/digest\/maztech-x4-fcs-fire-control-system\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maztech X4-FCS Review: How the Fire Control System Works\" \/>\n<meta property=\"og:description\" content=\"What is the Maztech X4-FCS? It is an LPVO mount with a built in Applied Ballistics solver and environmental sensors that projects a live, compensated\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gunsamerica.com\/digest\/maztech-x4-fcs-fire-control-system\/\" \/>\n<meta property=\"og:site_name\" content=\"Gun Reviews and News | GunsAmerica.com\/Digest\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/gunsamerica\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-12T16:36:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-18T20:53:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2025\/09\/IMG_3131.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1554\" \/>\n\t<meta property=\"og:image:height\" content=\"1036\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mitchell Graf\" \/>\n<meta name=\"twitter:card\" 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Looking to purchase a firearm online? 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