{"product_id":"luth-ar-gb-750a-adjustable-gas-block-750-ar-15-ar-10","title":"Luth-AR GB-750A Adjustable Gas Block .750\" - AR-15\/AR-10","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eLuth-AR GB-750A Adjustable Gas Block\u003c\/span\u003e\u003c\/strong\u003e is a low-profile, set-screw adjustable gas block designed for AR-15 and AR-10 pattern rifles chambered in \u003cstrong\u003e5.56\/.223\u003c\/strong\u003e and \u003cstrong\u003e7.62\/.308\u003c\/strong\u003e. It fits standard barrels with a \u003cstrong\u003e.750\"\u003c\/strong\u003e gas block journal diameter and installs as a direct replacement for a factory fixed gas block or as an upgrade on a new build.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eMachined from \u003cstrong\u003eheat-treated 4140 steel\u003c\/strong\u003e and finished in a corrosion-resistant \u003cstrong\u003eblack\u003c\/strong\u003e coating, the GB-750A keeps a slim, low-profile footprint that tucks neatly under free-float handguards. The set-screw adjustment lets the shooter tune gas flow to the operating system, with \u003cstrong\u003e+\u003c\/strong\u003e and \u003cstrong\u003e-\u003c\/strong\u003e indicator markings engraved around the adjustment screw for quick at-a-glance reference.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eAt just \u003cstrong\u003e1.0365\"\u003c\/strong\u003e overall length and \u003cstrong\u003e1.33\"\u003c\/strong\u003e tall, the GB-750A drops cleanly into most drop-in handguards and free-float rails. Inside diameter is \u003cstrong\u003e.750\"\u003c\/strong\u003e with an outside width of \u003cstrong\u003e.9365\"\u003c\/strong\u003e, secured to the barrel by two \u003cstrong\u003e1\/4-20 x 3\/16\"\u003c\/strong\u003e set screws for a positive lock-up.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eWhether you are building a new rifle or replacing an existing fixed gas block, the Luth-AR GB-750A is a straightforward, durable upgrade for the AR-15 or AR-10 platform.\u003c\/span\u003e\u003c\/p\u003e","brand":"Luth-AR","offers":[{"title":"Default Title","offer_id":55110006440258,"sku":"196424","price":20.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_fb845640-2391-46ca-b74d-84a2b1700674.png?v=1784803512","url":"https:\/\/centerfiresystems.com\/products\/luth-ar-gb-750a-adjustable-gas-block-750-ar-15-ar-10","provider":"Centerfire Systems","version":"1.0","type":"link"}