{"id":73172,"date":"2017-04-28T19:18:36","date_gmt":"2017-04-28T23:18:36","guid":{"rendered":"https:\/\/www.gunsamerica.com\/blog\/?p=73172"},"modified":"2017-04-28T19:18:36","modified_gmt":"2023-08-20T22:12:27","slug":"ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017","status":"publish","type":"post","link":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/","title":{"rendered":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017"},"content":{"rendered":"<div id=\"attachment_73094\" style=\"width: 410px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/PK3.jpg\" target=\"_blank\" class=\"clickTracking\" campaign=\"ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-73094\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" class=\"size-medium wp-image-73094\" src=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/PK3-400x300.jpg\" alt=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" width=\"400\" height=\"300\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/PK3-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/PK3-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/PK3-768x576.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/PK3-1024x768.jpg 1024w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/PK3.jpg 1200w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-73094\" class=\"wp-caption-text\">The CMMG Guard line of .45 ACP carbines give shooters an AR-based carbine in this big-bore pistol cartridge.<\/p><\/div>\n<p>Do you want a modern-day \u201cGrease Gun\u201d .45 ACP carbine (semi-auto, of course) that is based off the AR and feeds from Glock magazines? Then CMMG has you covered with the new <a href=\"https:\/\/www.cmmginc.com\/product-category\/rifles\/45-acp\/\" campaign=\"CMMG45Guard\" target=\"_blank\" class=\"clickTracking\">MkG45 Guard<\/a> series.<\/p>\n<p>Released at the 2017 NRA Show in Atlanta, Georgia, the Guard (which is offered in five different configurations) employs a patent-pending \u201cRadial Delayed Blowback\u201d system and feeds from .45 ACP-sized Glock magazines. CMMG tested out traditional straight blowback systems as well direct gas impingement systems, but issues with reliability sent them back to the drawing the board.<\/p>\n<div id=\"attachment_73175\" style=\"width: 978px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png\" target=\"_blank\" class=\"clickTracking\" campaign=\"ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-73175\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" class=\"size-full wp-image-73175\" src=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png\" alt=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" width=\"968\" height=\"413\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png 968w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM-150x64.png 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM-400x171.png 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM-768x328.png 768w\" sizes=\"(max-width: 968px) 100vw, 968px\" \/><\/a><p id=\"caption-attachment-73175\" class=\"wp-caption-text\">The Guard employs a Radial Blowback System that uses a rotating bolt that prevents the action from opening until pressure drops to safe levels. Image courtesy of manufacturer.<\/p><\/div>\n<p>What resulted was the Radial Delayed Blowback System that interestingly employs a rotating bolt that requires the force of recoil to rotate and unlock, keeping the action closed long enough to allow chamber pressure to drop to safe levels. The result is a blowback system that does not require a heavy and large bolt carrier system (reminiscent of the HK-style roller-locked systems) and offers a lighter carbine with reduced recoil. The best of both worlds, huh?<\/p>\n<div id=\"attachment_73074\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/CMMG45Guard-6.jpg\" target=\"_blank\" class=\"clickTracking\" campaign=\"ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-73074\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" class=\"size-full wp-image-73074\" src=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/CMMG45Guard-6.jpg\" alt=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" width=\"1200\" height=\"900\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-6.jpg 1200w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-6-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-6-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-6-768x576.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-6-1024x768.jpg 1024w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/a><p id=\"caption-attachment-73074\" class=\"wp-caption-text\">The Guard is offered in pistol, rifle (top) and SBR (bottom) variations.<\/p><\/div>\n<p>Each Guard comes with one 13-round factory Glock 21 magazine, and bolt weight kits will be offered that allow shooters to fine-tune the system for use with +P ammo or with a suppressor.<\/p>\n<div id=\"attachment_73076\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/CMMG45Guard-2.jpg\" target=\"_blank\" class=\"clickTracking\" campaign=\"ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-73076\" title=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" class=\"size-full wp-image-73076\" src=\"https:\/\/www.gunsamerica.com\/blog\/wp-content\/uploads\/2017\/04\/CMMG45Guard-2.jpg\" alt=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" width=\"1200\" height=\"900\" srcset=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-2.jpg 1200w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-2-150x113.jpg 150w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-2-400x300.jpg 400w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-2-768x576.jpg 768w, https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/CMMG45Guard-2-1024x768.jpg 1024w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/a><p id=\"caption-attachment-73076\" class=\"wp-caption-text\">Anyone familiar with an AR will be right at home with the .45 ACP Guard. Shown with extended magazine.<\/p><\/div>\n<p>The MkG45 GUARD comes with one 13-round factory Glock 21 magazine. For optimal reliability, CMMG recommends using factory double-stack GLOCK .45 ACP magazines. Bolt weight kits will be sold separately for those who wish to fine-tune the GUARD for +P ammunition or suppressor usage. The Guard is offered in carbine, SBR and pistol variants.<\/p>\n<p>Keep an eye out for a full review in the coming weeks.<\/p>\n<p>For more information, visit <a href=\"https:\/\/www.cmmginc.com\/product-category\/rifles\/45-acp\/\" campaign=\"CMMGGuard45\" target=\"_blank\" class=\"clickTracking\">https:\/\/www.cmmginc.com\/product-category\/rifles\/45-acp\/<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Released at the 2017 NRA Show in Atlanta, Georgia, the CMMG AR-pattern .45 ACP Guard employs a patent-pending \u201cRadial Delayed Blowback\u201d system and feeds from .45 ACP-sized Glock magazines. <\/p>\n","protected":false},"author":55,"featured_media":73175,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_specdata_upc":"","_specdata_placement":"","footnotes":""},"categories":[7],"tags":[138,613,132,451,102,959],"featured":[],"hunt365":[],"class_list":{"0":"post-73172","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-gunsamerica-authors","8":"tag-45-acp","9":"tag-ar-15","10":"tag-buzz","11":"tag-cmmg","12":"tag-feature-articles","13":"tag-nra-2017"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017<\/title>\n<meta name=\"description\" content=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017 - 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\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\" \/>\n<meta property=\"og:description\" content=\"Released at the 2017 NRA Show in Atlanta, Georgia, the CMMG AR-pattern .45 ACP Guard employs a patent-pending \u201cRadial Delayed Blowback\u201d system and feeds from .45 ACP-sized Glock magazines.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/\" \/>\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=\"2017-04-28T23:18:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-08-20T22:12:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png\" \/>\n\t<meta property=\"og:image:width\" content=\"968\" \/>\n\t<meta property=\"og:image:height\" content=\"413\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Michael O. Humphries\" \/>\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=\"Michael O. Humphries\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/\"},\"author\":{\"name\":\"Michael O. Humphries\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#\\\/schema\\\/person\\\/4a43dbe059fdf3b944a4e17fc508b50e\"},\"headline\":\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\",\"datePublished\":\"2017-04-28T23:18:36+00:00\",\"dateModified\":\"2023-08-20T22:12:27+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/\"},\"wordCount\":415,\"commentCount\":31,\"publisher\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2017\\\/04\\\/Screen-Shot-2017-04-28-at-7.05.49-PM.png\",\"keywords\":[\".45 ACP\",\"AR-15\",\"Buzz\",\"CMMG\",\"Feature Articles\",\"NRA 2017\"],\"articleSection\":[\"Authors\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/\",\"url\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/\",\"name\":\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2017\\\/04\\\/Screen-Shot-2017-04-28-at-7.05.49-PM.png\",\"datePublished\":\"2017-04-28T23:18:36+00:00\",\"dateModified\":\"2023-08-20T22:12:27+00:00\",\"description\":\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017 - Authors\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#primaryimage\",\"url\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2017\\\/04\\\/Screen-Shot-2017-04-28-at-7.05.49-PM.png\",\"contentUrl\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2017\\\/04\\\/Screen-Shot-2017-04-28-at-7.05.49-PM.png\",\"width\":968,\"height\":413,\"caption\":\"The Guard employs a Radial Blowback System that uses a rotating bolt that prevents the action from opening until pressure drops to safe levels. Image courtesy of manufacturer.\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#website\",\"url\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/\",\"name\":\"Gun Reviews and News | GunsAmerica.com\\\/Digest\",\"description\":\"Gun Reviews, Industry News, and Product Reviews for Rifles, Pistols, Revolvers, Shotguns, Optics, and Ammunition. Looking to purchase a firearm online? Look no further than GunsAmerica.com, America&#039;s premier destination for buying and selling firearms.\",\"publisher\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#organization\",\"name\":\"GunsAmerica\",\"url\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/image-3.png\",\"contentUrl\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/image-3.png\",\"width\":286,\"height\":156,\"caption\":\"GunsAmerica\"},\"image\":{\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/gunsamerica\",\"https:\\\/\\\/x.com\\\/gunsamerica\",\"https:\\\/\\\/instagram.com\\\/gunsamerica_official\\\/\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/GunsAmerica\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/#\\\/schema\\\/person\\\/4a43dbe059fdf3b944a4e17fc508b50e\",\"name\":\"Michael O. Humphries\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/a6ab29015e9de892d660a3243714b2f3cf330f98f4bdce2661c0ab1383955d32?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/a6ab29015e9de892d660a3243714b2f3cf330f98f4bdce2661c0ab1383955d32?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/a6ab29015e9de892d660a3243714b2f3cf330f98f4bdce2661c0ab1383955d32?s=96&d=mm&r=g\",\"caption\":\"Michael O. Humphries\"},\"url\":\"https:\\\/\\\/gunsamerica.com\\\/digest\\\/author\\\/mike-humphries\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017","description":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017 - Authors","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/","og_locale":"en_US","og_type":"article","og_title":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017","og_description":"Released at the 2017 NRA Show in Atlanta, Georgia, the CMMG AR-pattern .45 ACP Guard employs a patent-pending \u201cRadial Delayed Blowback\u201d system and feeds from .45 ACP-sized Glock magazines.","og_url":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/","og_site_name":"Gun Reviews and News | GunsAmerica.com\/Digest","article_publisher":"https:\/\/www.facebook.com\/gunsamerica","article_published_time":"2017-04-28T23:18:36+00:00","article_modified_time":"2023-08-20T22:12:27+00:00","og_image":[{"width":968,"height":413,"url":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png","type":"image\/png"}],"author":"Michael O. Humphries","twitter_card":"summary_large_image","twitter_creator":"@gunsamerica","twitter_site":"@gunsamerica","twitter_misc":{"Written by":"Michael O. Humphries","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#article","isPartOf":{"@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/"},"author":{"name":"Michael O. Humphries","@id":"https:\/\/gunsamerica.com\/digest\/#\/schema\/person\/4a43dbe059fdf3b944a4e17fc508b50e"},"headline":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017","datePublished":"2017-04-28T23:18:36+00:00","dateModified":"2023-08-20T22:12:27+00:00","mainEntityOfPage":{"@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/"},"wordCount":415,"commentCount":31,"publisher":{"@id":"https:\/\/gunsamerica.com\/digest\/#organization"},"image":{"@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#primaryimage"},"thumbnailUrl":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png","keywords":[".45 ACP","AR-15","Buzz","CMMG","Feature Articles","NRA 2017"],"articleSection":["Authors"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/","url":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/","name":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017","isPartOf":{"@id":"https:\/\/gunsamerica.com\/digest\/#website"},"primaryImageOfPage":{"@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#primaryimage"},"image":{"@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#primaryimage"},"thumbnailUrl":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png","datePublished":"2017-04-28T23:18:36+00:00","dateModified":"2023-08-20T22:12:27+00:00","description":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017 - Authors","breadcrumb":{"@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#primaryimage","url":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png","contentUrl":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM.png","width":968,"height":413,"caption":"The Guard employs a Radial Blowback System that uses a rotating bolt that prevents the action from opening until pressure drops to safe levels. Image courtesy of manufacturer."},{"@type":"BreadcrumbList","@id":"https:\/\/gunsamerica.com\/digest\/ar-based-grease-gun-cmmgs-new-mkg45-guard-carbine-nra-2017\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/gunsamerica.com\/digest\/"},{"@type":"ListItem","position":2,"name":"An AR-Based Grease Gun? CMMG\u2019s New MkG45 Guard Carbine \u2013 NRA 2017"}]},{"@type":"WebSite","@id":"https:\/\/gunsamerica.com\/digest\/#website","url":"https:\/\/gunsamerica.com\/digest\/","name":"Gun Reviews and News | GunsAmerica.com\/Digest","description":"Gun Reviews, Industry News, and Product Reviews for Rifles, Pistols, Revolvers, Shotguns, Optics, and Ammunition. Looking to purchase a firearm online? Look no further than GunsAmerica.com, America&#039;s premier destination for buying and selling firearms.","publisher":{"@id":"https:\/\/gunsamerica.com\/digest\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/gunsamerica.com\/digest\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/gunsamerica.com\/digest\/#organization","name":"GunsAmerica","url":"https:\/\/gunsamerica.com\/digest\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/gunsamerica.com\/digest\/#\/schema\/logo\/image\/","url":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2026\/01\/image-3.png","contentUrl":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2026\/01\/image-3.png","width":286,"height":156,"caption":"GunsAmerica"},"image":{"@id":"https:\/\/gunsamerica.com\/digest\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/gunsamerica","https:\/\/x.com\/gunsamerica","https:\/\/instagram.com\/gunsamerica_official\/","https:\/\/www.youtube.com\/user\/GunsAmerica"]},{"@type":"Person","@id":"https:\/\/gunsamerica.com\/digest\/#\/schema\/person\/4a43dbe059fdf3b944a4e17fc508b50e","name":"Michael O. Humphries","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/a6ab29015e9de892d660a3243714b2f3cf330f98f4bdce2661c0ab1383955d32?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/a6ab29015e9de892d660a3243714b2f3cf330f98f4bdce2661c0ab1383955d32?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a6ab29015e9de892d660a3243714b2f3cf330f98f4bdce2661c0ab1383955d32?s=96&d=mm&r=g","caption":"Michael O. Humphries"},"url":"https:\/\/gunsamerica.com\/digest\/author\/mike-humphries\/"}]}},"featured_image_src":"https:\/\/gunsamerica.com\/digest\/wp-content\/uploads\/2017\/04\/Screen-Shot-2017-04-28-at-7.05.49-PM-150x64.png","_links":{"self":[{"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/posts\/73172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/comments?post=73172"}],"version-history":[{"count":1,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/posts\/73172\/revisions"}],"predecessor-version":[{"id":182692,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/posts\/73172\/revisions\/182692"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/media\/73175"}],"wp:attachment":[{"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/media?parent=73172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/categories?post=73172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/tags?post=73172"},{"taxonomy":"featured","embeddable":true,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/featured?post=73172"},{"taxonomy":"hunt365","embeddable":true,"href":"https:\/\/gunsamerica.com\/digest\/wp-json\/wp\/v2\/hunt365?post=73172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}