{"product_id":"lantac-usa-gb750-s-low-profile-750-gas-block-4140-steel-ar-15","title":"LANTAC USA GB750-S Low Profile .750 Gas Block - 4140 Steel - AR-15","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eLANTAC USA GB750-S\u003c\/span\u003e\u003c\/strong\u003e (LA00243) is an \u003cstrong\u003eultra low-profile gas block\u003c\/strong\u003e built for AR-pattern rifles with a \u003cstrong\u003e.750\" gas seat diameter\u003c\/strong\u003e. Made from \u003cstrong\u003e4140 gun barrel steel\u003c\/strong\u003e and finished in a durable \u003cstrong\u003eType M black phosphate\u003c\/strong\u003e coating, this compact gas block is engineered to sit cleanly under slim and free-float handguards where taller factory blocks will not fit. A laser-engraved LANTAC logo marks the body.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe GB750-S uses a \u003cstrong\u003etwo set-screw retention design\u003c\/strong\u003e to lock tightly to the barrel's gas journal, delivering a gas-tight seal and reliable cycling across the duty cycle. At just \u003cstrong\u003e0.906\" wide\u003c\/strong\u003e and \u003cstrong\u003e1.307\" tall\u003c\/strong\u003e, it provides maximum clearance for low-profile handguard systems while remaining easy to access for adjustment and removal.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThis listing is for the \u003cstrong\u003e.750\" diameter\u003c\/strong\u003e version designed to fit standard AR-15\/M16-pattern barrel gas journals. The block ships complete with the hardware needed for installation, including \u003cstrong\u003e#10-32 x .125\" set screws\u003c\/strong\u003e and a \u003cstrong\u003egas tube roll pin\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eWhether you are building a custom AR, replacing a worn factory block, or running a low-profile free-float handguard setup, the LANTAC USA GB750-S delivers the strength of 4140 steel, the corrosion resistance of a black phosphate finish, and the precision fit LANTAC is known for.\u003c\/span\u003e\u003c\/p\u003e","brand":"Lantac USA","offers":[{"title":"Default Title","offer_id":55075766894914,"sku":"194120","price":56.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_05248af2-a7fc-4ace-ae90-cdedf9de667b.png?v=1784755076","url":"https:\/\/centerfiresystems.com\/products\/lantac-usa-gb750-s-low-profile-750-gas-block-4140-steel-ar-15","provider":"Centerfire Systems","version":"1.0","type":"link"}