{"product_id":"luth-ar-bl-03-gas-tube-roll-pin-5-64-x-320-4340-alloy-steel-ar-15","title":"Luth-AR BL-03 Gas Tube Roll Pin 5\/64\" x .320\" - 4340 Alloy Steel - AR-15","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eLuth-AR BL-03 Gas Tube Roll Pin\u003c\/span\u003e\u003c\/strong\u003e is a mil-spec replacement pin used to secure the gas tube to the gas block on an \u003cstrong\u003eAR-15\u003c\/strong\u003e. Manufactured from hardened \u003cstrong\u003e4340 alloy steel\u003c\/strong\u003e with a \u003cstrong\u003eblack\u003c\/strong\u003e finish, this roll pin is the correct size to lock the gas tube in proper alignment over the gas port so the rifle cycles reliably. It is a direct-fit service part for any Luth-AR low-profile gas block install and also serves as a standard AR-15 gas-tube roll pin for any build or repair.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eAt \u003cstrong\u003e5\/64\" x .320\"\u003c\/strong\u003e, the BL-03 matches the factory-spec dimensions called for in Luth-AR's gas block installation procedure and is compatible with all standard AR-15 gas tube lengths. Whether you are assembling a new build, swapping a gas block, or replacing a lost or damaged pin during a field strip, this is the correct factory part from Luth-AR. Use a small roll-pin punch and a sturdy block to drive it evenly through the gas block and gas tube; once seated, the gas tube is locked in place and the system is ready to function.\u003c\/span\u003e\u003c\/p\u003e","brand":"Luth-AR","offers":[{"title":"Default Title","offer_id":55233894744386,"sku":"196400","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_59ef4d5e-c65a-4b5f-a3d9-b754e79369c2.png?v=1785008636","url":"https:\/\/centerfiresystems.com\/products\/luth-ar-bl-03-gas-tube-roll-pin-5-64-x-320-4340-alloy-steel-ar-15","provider":"Centerfire Systems","version":"1.0","type":"link"}