{"id":99976,"date":"2019-05-26T08:34:45","date_gmt":"2019-05-26T12:34:45","guid":{"rendered":"https:\/\/www.gunsamerica.com\/digest\/?p=99976"},"modified":"2019-05-26T08:34:45","modified_gmt":"2023-09-05T13:58:39","slug":"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm","status":"publish","type":"post","link":"https:\/\/gunsamerica.com\/digest\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\/","title":{"rendered":"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm"},"content":{"rendered":"<div class=\"entry-content\">\n<p>Pistol Caliber Carbines have earned a place in your gun safe. Fun, inexpensive and easy to shoot, they even have their own competitions. The Mean Arms EndoMag magazine insert converts your Gen 2 or Gen 3 5.56\/.223 PMAG\u00ae housing into a 9mm magazine and conversion block mating a standard AR lower to your 9mm upper. This idea is simple, effective and brilliant.<\/p>\n<img loading=\"lazy\" decoding=\"async\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"aligncenter wp-image-101508 size-large\" src=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16181-e1544028602574-1024x768.jpg\" alt=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" width=\"1024\" height=\"768\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16181-e1544028602574-1024x768.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16181-e1544028602574-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16181-e1544028602574-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16181-e1544028602574-768x576.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\n<p>Millions of gun owners bought an AR lower or two during one of the many pre-gun ban panics. If you have an AR lower and a Magpul magazine sitting around, $29.99 and a 9mm upper will turn it into a 9mm training gun that uses mags the same size as 5.56 mags. These mags can be converted back to 5.56 in seconds.<\/p>\n<img loading=\"lazy\" decoding=\"async\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"aligncenter wp-image-101348 size-large\" src=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_15491-e1543799651797-1024x768.jpg\" alt=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" width=\"1024\" height=\"768\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_15491-e1543799651797-1024x768.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_15491-e1543799651797-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_15491-e1543799651797-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_15491-e1543799651797-768x576.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\n<p>Do you live in a state where your freedom is regulated? No worries. The Endomag has a tab (built in to the back of the insert) which limits capacity to 10 rounds. It is marked at 15, 20 and 30, you can cut the tab to fit your circumstances. They are sold limited to ten rounds. You can always increase the capacity up to a maximum of 30 with a pair of EMT shears or cutters.<\/p>\n<p><iframe loading=\"lazy\" title=\"Testing some new magazines\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/bTEDG6rhOrk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>All of your AR controls work just the way they are supposed to including last round bolt hold open. Inside an AR magazine, they fit in your existing magazine pouches. No more dedicated lowers or conversion blocks, EndoMags work with Glock or Colt variant 9mm Bolt Carrier Groups. They even have a version that works with the CMMG Guard uppers.<a href=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16191.jpg\" target=\"_blank\" class=\"clickTracking\" campaign=\"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\"><img loading=\"lazy\" decoding=\"async\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"aligncenter size-large wp-image-101510\" src=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16191-768x1024.jpg\" alt=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" width=\"768\" height=\"1024\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16191-768x1024.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16191-113x150.jpg 113w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/12\/IMG_16191-225x300.jpg 225w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><\/p>\n<\/div>\n<div class=\"entry-content\">\n<p>I used the EndoMag with five different 9mm uppers and lowers. They ran well in every configuration. The only compatibility issue is side cocking uppers. They do not work with EndoMag.<\/p>\n<div class=\"fluid-width-video-wrapper\">\n<div id=\"attachment_110019\" style=\"width: 1034px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-110019\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"wp-image-110019 size-large\" src=\"https:\/\/loadoutroom.com\/wp-content\/uploads\/2018\/10\/IMG_15501-1024x768.jpg\" alt=\"Magazine Insert Converts Your AR Lower to 9mm: Mean Arms EndoMag\" width=\"1024\" height=\"768\" \/><p id=\"caption-attachment-110019\" class=\"wp-caption-text\">The Mean Arms EndoMag Magazine Insert Converts Your AR Lower to 9mm<\/p><\/div>\n<\/div>\n<\/div>\n<p>I have used EndoMag on registered full auto lowers.They work flawlessly, I mean zero malfunctions over 400 rounds. This is a great way to make a 9mm machinegun from your registered AR lower. Change the upper and the buffer and you are ready to go. Shooting pistol steel with a 9mm machinegun is an incredible experience. It will change your life and it is cheaper than .223.<\/p>\n<p>Features the Mean Arms 9mm Magazine Adapter:<\/p>\n<ul>\n<li>Quickly and easily change calibers from .223\/5.56 to a caliber associated with the caliber converter in a MagPul 30-round 5.56\u00d745 PMAGs\u24c7 (Gen 2 and 3)<\/li>\n<li>Functions as a magazine!<\/li>\n<li>No magazine well adapter needed!<\/li>\n<li>Keep your standard 5.56 Multi Caliber lower receiver!<\/li>\n<li>Comes fully assembled.<\/li>\n<li>No tools required.<\/li>\n<li>Keep all your PMAGs\u24c7 in use, no need to buy additional or specific 9mm magazines.<\/li>\n<li>Keep your muscle-memory reload-training the same between calibers! Same magazine, same draw, same feel.<\/li>\n<li>No learning curve when reloading because it is the same magazine you already use!<\/li>\n<li>Use most of your PMAG\u24c7 accessories: i.e. mag pouches, storage racks, decals, caliber indicators, etc.<\/li>\n<li>Shoots all types of 9mm rounds. Hollow points included.<\/li>\n<\/ul>\n<p><iframe loading=\"lazy\" title=\"EndoMag\u2122 Installation and Removal\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/-v7MEUNsOBE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<div class=\"entry-content\">\n<div class=\"six columns contentArea\">\n<p>The firearm used in the video above is a Colt AR-15 semi-auto 9mm Model AR6951. The Colt magwell adapter was removed to accommodate a standard 5.56\/.223 PMAG.<\/p>\n<p><strong>Advantages:<br \/>\n<\/strong><\/p>\n<ul>\n<li>No modifications to your 5.56\u00d745 lower! \u00a0Changing calibers is now simply a complete 9mm upper for your AR platform. No nuts, no bolts, no drilling, no bull.<\/li>\n<li>Last round bolt-hold-open feature, just as an AR15 should function.<\/li>\n<li>Built-in ejector designed to perform under intense conditions.<\/li>\n<li>You can convert your 5.56\u00d745 PMAG\u24c7 to 9mm in seconds and easily convert back to 5.56 without damaging your PMAG\u24c7. No permanent changes to anything!<\/li>\n<\/ul>\n<div id=\"attachment_100879\" style=\"width: 1034px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-100879\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"wp-image-100879 size-large\" src=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_16161-e1543194484794-1024x768.jpg\" alt=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" width=\"1024\" height=\"768\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_16161-e1543194484794-1024x768.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_16161-e1543194484794-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_16161-e1543194484794-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_16161-e1543194484794-768x576.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-100879\" class=\"wp-caption-text\">Why walk to check targets? AR500 Steel targets from ctstargets.com make range days a lot more fun and give instant feedback from 100 yards away.<\/p><\/div>\n<p>I am a big fan of marking magazines to track performance and organize different calibers. The internal changes with Endomag make identification even harder so Gunskins is a perfect solution.<\/p>\n<img loading=\"lazy\" decoding=\"async\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"aligncenter wp-image-100876 size-large\" src=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15831-e1543193896754-768x1024.jpg\" alt=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" width=\"768\" height=\"1024\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15831-e1543193896754-768x1024.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15831-e1543193896754-113x150.jpg 113w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15831-e1543193896754-225x300.jpg 225w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\n<p><a href=\"https:\/\/www.gunskins.com\/products\/ar-15-single-mag-skin\" target=\"_blank\" class=\"clickTracking\" campaign=\"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\">GunSkins AR-15 Mag Skins<\/a> are pre-cut templates designed to fit around 30-round 5.56 x 45 NATO (.223 Remington) AR magazines.\u00a0The kit includes pieces for the left and right side of a single magazine.<\/p>\n<p>To cover, protect, and identify your magazines with <a href=\"https:\/\/www.gunskins.com\/products\/ar-15-single-mag-skin\" target=\"_blank\" class=\"clickTracking\" campaign=\"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\">GunSkins<\/a>, all you need to do is: clean the surface, peel and stick, add heat to conform, and then trim away any excess material. <a href=\"https:\/\/www.gunskins.com\/products\/ar-15-single-mag-skin\" target=\"_blank\" class=\"clickTracking\" campaign=\"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\">GunSkins<\/a> offers camouflage and specialty patterns to choose from.<\/p>\n<p>Just like the Endomag, they are removable with no residue. The waterproof non-reflective matte finish of high-performance vinyl conforms to any shape magazine. They are perfect for the P-mags used here.<\/p>\n<p><iframe loading=\"lazy\" title=\"GunSkins AR 15 Mag Skin PMAG DIY Install Tutorial\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/0HkayaL_lqM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<\/div>\n<div>With no gas system, ARs chambered in 9mm make great pistols. Arm braces have come a long way in recent years. The best of the crop is CMMG&#8217;s RipBrace. Featuring CMMG&#8217;s FASTBACK Technology, RipBrace allows pistol shooters to simply pull straight back to extend the brace to a pre-selected length. There is no need to press a lever or button to deploy and adjust the brace.\u00a0 This instant deployment makes RipBrace a perfect choice for any AR pistol used for personal defense.<\/div>\n<div><img loading=\"lazy\" decoding=\"async\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"aligncenter wp-image-100877 size-large\" src=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15841-e1543195078661-1024x768.jpg\" alt=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" width=\"1024\" height=\"768\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15841-e1543195078661-1024x768.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15841-e1543195078661-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15841-e1543195078661-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15841-e1543195078661-768x576.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/div>\n<div>\n<p>This ATFE approved brace has personal position presets (P3 Technology) to allow shooters to select adjustment holes to place the brace in the same desired position each time. Exceptionally lightweight with ambidextrous functionality, the RipBrace is the new state of the art.<\/p>\n<\/div>\n<p><strong>ENDOMAG Package Selection<\/strong><\/p>\n<p>One mag $29.99<\/p>\n<p>Three mags $79.99<\/p>\n<p>You can buy your very own Mean Arms Endomage <a href=\"https:\/\/www.meanarms.com\/products\/detail\/endomag-9mm\" target=\"_blank\" class=\"clickTracking\" campaign=\"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\">HERE<\/a><\/p>\n<div id=\"attachment_100690\" style=\"width: 1034px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266.jpg\" target=\"_blank\" class=\"clickTracking\" campaign=\"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-100690\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" class=\"wp-image-100690 size-large\" src=\"https:\/\/www.gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266-1024x768.jpg\" alt=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" width=\"1024\" height=\"768\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266-1024x768.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266-768x576.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><p id=\"caption-attachment-100690\" class=\"wp-caption-text\">New Frontier Armory Parts- 9mm upper with 8\u2033 Match Grade 9mm AR barrel, MP-5 cut bolt and 10oz Blowback Buffer. MagPul Angled Foregrip and magazine.\u00a0ELF AR-15 Anti-Walk Pins, Mission First Tactical ENGAGE Pistol Grip, H&amp;K MP-5 flash hider, CMMG&#8217;s RipBrace, GunSkins AR-15 Mag Skins, Inforce WML light, and Trijicon Reflex sight.<\/p><\/div>\n<p>You can find a variety 9mm AR uppers on <a href=\"https:\/\/www.gunsamerica.com\/Search.aspx?Keyword=9mm%20ar%20upper\" target=\"_blank\" class=\"clickTracking\" campaign=\"simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\" title=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\">GunsAmerica<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Pistol Caliber Carbines have earned a place in your gun safe. Fun, inexpensive and easy to shoot, they even have their own competitions. The Mean Arms EndoMag magazine insert converts your Gen 2 or Gen 3 5.56\/.223 PMAG\u00ae housing into a 9mm magazine and conversion block mating a standard AR lower to your 9mm upper. This idea is simple, effective and brilliant.<\/p>\n","protected":false},"author":90,"featured_media":100690,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_specdata_upc":"","_specdata_placement":"","footnotes":""},"categories":[59,7,1107],"tags":[1413,613,1412,132,102],"featured":[],"hunt365":[],"class_list":{"0":"post-99976","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-ar-15-gear-reviews","8":"category-gunsamerica-authors","9":"category-mark-miller","10":"tag-9mm-ar-conversion-block","11":"tag-ar-15","12":"tag-best-9mm-conversion","13":"tag-buzz","14":"tag-feature-articles"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm<\/title>\n<meta name=\"description\" content=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm - Authors\" \/>\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\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\" \/>\n<meta property=\"og:description\" content=\"Pistol Caliber Carbines have earned a place in your gun safe. Fun, inexpensive and easy to shoot, they even have their own competitions. The Mean Arms EndoMag magazine insert converts your Gen 2 or Gen 3 5.56\/.223 PMAG\u00ae housing into a 9mm magazine and conversion block mating a standard AR lower to your 9mm upper. This idea is simple, effective and brilliant.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gunsamerica.com\/digest\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\/\" \/>\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=\"2019-05-26T12:34:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-05T13:58:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2018\/11\/IMG_15871-e1542903951266.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mark Miller\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@gunsamerica\" \/>\n<meta name=\"twitter:site\" content=\"@gunsamerica\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Miller\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/\"},\"author\":{\"name\":\"Mark Miller\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#\\\/schema\\\/person\\\/bd2db133d0b9c8e1c459a43bea26821b\"},\"headline\":\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\",\"datePublished\":\"2019-05-26T12:34:45+00:00\",\"dateModified\":\"2023-09-05T13:58:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/\"},\"wordCount\":986,\"commentCount\":4,\"publisher\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2018\\\/11\\\/IMG_15871-e1542903951266.jpg\",\"keywords\":[\"9mm AR conversion block\",\"AR-15\",\"best 9mm conversion\",\"Buzz\",\"Feature Articles\"],\"articleSection\":[\"AR-15\",\"Authors\",\"Mark Miller\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/\",\"url\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/\",\"name\":\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/simple-ar-caliber-change-endomag-insert-converts-your-lower-to-9mm\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2018\\\/11\\\/IMG_15871-e1542903951266.jpg\",\"datePublished\":\"2019-05-26T12:34:45+00:00\",\"dateModified\":\"2023-09-05T13:58:39+00:00\",\"description\":\"Simple AR Caliber Change: EndoMag Insert Converts Your Lower to 9mm - 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