{"id":1472,"date":"2026-01-24T12:47:39","date_gmt":"2026-01-24T12:47:39","guid":{"rendered":"https:\/\/polymer80firearms.com\/?post_type=product&p=1472"},"modified":"2026-01-24T12:47:51","modified_gmt":"2026-01-24T12:47:51","slug":"gst-9-mod1-jig-w-tool-kit-slide-rails","status":"publish","type":"product","link":"https:\/\/usaguncenter.com\/polymer80\/product\/gst-9-mod1-jig-w-tool-kit-slide-rails\/","title":{"rendered":"GST-9: MOD1, Jig w\/ Tool Kit & Slide Rails"},"content":{"rendered":"
\n

Our GST-9 MOD1 just got the biggest upgrade ever. We are now including industry-leading CNC precision cut rails made from hardened steel\u00a0at no additional cost.<\/strong>\u00a0It\u2019ll change the way you shoot.<\/p>\n

Every jig we produce has led the market. This isn\u2019t hyperbole, this isn\u2019t fluff, it\u2019s just the truth. From the invention of the original AR-15 router jig, to the re-imagination of 80% Glock compatible jigs, we pride ourselves on having the easiest, most accurate, and most durable jigs available for home-building enthusiasts.\u00a0<\/p>\n

The MOD1 Jig is no exception. Taking the already rock-solid jig for the original GST-9, we\u2019ve improved on the finishing process even further. Extended drill guides offer more support for the drill bits allowing more precise completion, helping eliminate the most common mistake when building 80% pistols: drilling oblong or off center holes.\u00a0<\/p>\n

We\u2019ve also added an additional bolt point, making sure that the jig has 100% coverage in its clamping system. This ensures that every cut you make is in the right place, every time. The MOD1 Jig is also made of US glass-filled reinforced polymer.<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014-<\/p>\n

JIGS ARE AVAILABLE FOR SALE ONLY TO CUSTOMERS WHO HAVE PURCHASED A\u00a0 FRAME. LIMIT OF 1 JIG PER FRAME.<\/p>\n

Due to recently changed ATF regulations, we cannot legally include the jig or frame rails with the GST-9 frame. The jig and GST-9 frame must be purchased on our website as two separate items. Each jig includes one set of GST-9 frame rails. You will need one jig for each 80% lower you plan to build. Frame rails are ONLY included with the jig, not with the 80% lower itself.<\/em><\/p>\n

Shipping Restrictions: This item is restricted from shipping to\u00a0California, Connecticut, New Jersey, New York, Washington D.C, Washington, Hawaii, Oakland City, Unincorporated Boulder County Colorado (Allenspark, Coal Creek Canyon, Eldora, Eldorado Springs, Gold Hill, Gunbarrel, Hygiene, and Niwot), City of Denver Colorado, City of Philadelphia Pennsylvania,\u00a0Maryland, Illinois, and Rhode Island<\/strong><\/p>\n

\u00a0<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Our GST-9 MOD1 just got the biggest upgrade ever. We are now including industry-leading CNC precision cut rails made from hardened steel\u00a0at no additional cost.\u00a0It\u2019ll change the way you shoot. Every jig we produce has led the market. This isn\u2019t hyperbole, this isn\u2019t fluff, it\u2019s just the truth. From the invention of the original AR-15 […]<\/p>\n","protected":false},"featured_media":1502,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":"","iawp_total_views":0},"product_brand":[23],"product_cat":[47],"product_tag":[],"class_list":{"0":"post-1472","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-polymer80","7":"product_cat-pistol-80-lower-jig","9":"first","10":"instock","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"yoast_head":"\nGST-9: MOD1, Jig w\/ Tool Kit & Slide Rails - Polymer 80 Firearms - Authorized Polymer80 Distributor<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/usaguncenter.com\/polymer80\/product\/gst-9-mod1-jig-w-tool-kit-slide-rails\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GST-9: MOD1, Jig w\/ Tool Kit & Slide Rails\" \/>\n<meta property=\"og:description\" content=\"Our GST-9 MOD1 just got the biggest upgrade ever. We are now including industry-leading CNC precision cut rails made from hardened steel\u00a0at no additional cost.\u00a0It\u2019ll change the way you shoot. Every jig we produce has led the market. This isn\u2019t hyperbole, this isn\u2019t fluff, it\u2019s just the truth. 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