Primary Arms

Explore Primary Arms, where precision meets affordability. Known for delivering high-quality optics at an exceptional value, Primary Arms products are trusted by competitive shooters, hunters, and tactical professionals alike. Primary Arms pioneered accessible prism scopes and ACSS reticle technology, bringing advanced ballistic solutions to every price point. Browse our selection of red dot sights, rifle scopes, prism optics, and accessories designed to enhance accuracy and confidence at any distance.

Product Focus

Frequently asked questions

What is Primary Arms and what makes their optics stand out?

Primary Arms is a Texas-based optics company founded in 2008 that designs and manufactures riflescopes, red dot sights, and prism optics. What sets Primary Arms apart is their proprietary ACSS (Advanced Combined Sighting System) reticle technology, which provides built-in bullet drop compensation, wind holds, and range estimation — all at price points that are accessible to a wide range of shooters. Their commitment to delivering professional-grade optical performance without the premium price tag has earned them a loyal following among hunters, sport shooters, and law enforcement professionals.

What are the most popular Primary Arms optics and their key features?

Some of the most popular Primary Arms products include the SLx 1X MicroPrism (a compact prism sight with ACSS reticle), the GLx 2X Prism Scope (a durable magnified optic for close to mid-range engagements), and the SLx MD-25 red dot sight (a reliable, budget-friendly reflex optic). The PLx line offers premium-tier riflescopes with Japanese glass and first focal plane reticles for long-range precision. Key features across the lineup include the ACSS reticle system, aircraft-grade aluminum construction, waterproof and fog-proof sealing, and generous eye relief.

What is the ACSS reticle and how does it improve accuracy?

The ACSS (Advanced Combined Sighting System) is Primary Arms' proprietary reticle design that integrates bullet drop compensation, wind drift holds, moving target leads, and range estimation into a single reticle pattern. Instead of relying on turret adjustments or memorizing holdover charts, shooters can use the ACSS reticle markings to make fast, accurate shots at varying distances. ACSS reticles are calibrated for specific cartridges and are available across Primary Arms' prism scopes, riflescopes, and select red dot sights, making them a practical solution for both beginners and experienced marksmen.

How do I choose the right Primary Arms optic for my needs?

Choosing the right Primary Arms optic depends on your intended use and firearm setup. For close-quarters and home defense, the SLx MicroPrism or MD-25 red dot provide fast target acquisition at short distances. For versatile mid-range use on an AR-15 or similar platform, the GLx 2X Prism or an SLx 3X MicroPrism offer magnification with a compact form factor. For hunting and long-range precision shooting, the PLx and SLx series riflescopes with ACSS or standard crosshair reticles provide the magnification and clarity needed at extended distances. Consider factors such as magnification, reticle type, mounting options, and budget when making your selection.

What accessories and mounts are available for Primary Arms optics?

Primary Arms offers a full range of accessories designed to complement their optics lineup. These include cantilever mounts, quick-detach risers, flip-up lens caps, anti-reflection kill flash filters, and battery caps. Many Primary Arms optics are compatible with standard Picatinny and M-LOK mounting systems, and the company also produces co-branded mounts engineered for specific optic models. Additionally, third-party accessories such as magnifiers, offset mounts, and scope rings from brands like Aero Precision and ADM are fully compatible with most Primary Arms sights.

Are Primary Arms optics covered by a warranty?

Yes, Primary Arms backs their optics with a limited lifetime warranty that covers defects in materials and workmanship for the original purchaser. Their customer service team is based in Houston, Texas, and is known for responsive support and fast turnaround on warranty claims. This warranty applies to the SLx, GLx, and PLx product lines. Normal wear, misuse, and unauthorized modifications are not covered, so it is important to follow the manufacturer's care and installation guidelines to maintain warranty eligibility.

About

Primary Arms is a leading American optics brand headquartered in Houston, Texas, recognized for producing high-performance riflescopes, red dot sights, and prism optics that deliver premium features at accessible price points. Founded in 2008, the company has grown from a small online retailer into a respected optics manufacturer whose products are trusted by competitive shooters, hunters, law enforcement officers, and military personnel. Primary Arms is best known for developing the ACSS (Advanced Combined Sighting System) reticle, a proprietary design that integrates bullet drop compensation, wind holds, and range estimation into a single intuitive sighting solution. The company's product lineup spans multiple tiers — from the value-oriented SLx series to the mid-range GLx line and the premium PLx collection — ensuring there is an optic suited to every shooter's needs and budget. Each Primary Arms optic is engineered with durability in mind, featuring aircraft-grade aluminum housings, waterproof and fog-proof sealing, and shock-resistant construction capable of withstanding heavy recoil. Primary Arms continuously invests in optical research and development, partnering with professional shooters and end users to refine its designs and introduce new innovations. Whether you are building a home defense rifle, outfitting a precision bolt gun, or setting up an AR-15 for competition, Primary Arms offers an optic engineered to elevate your shooting performance without exceeding your budget.

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Popular Models

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