Bravo Company MK12 Stainless Steel Rifle Length Gas System 18 fits AR-15

MK12 Stainless Steel Rifle Length Gas System Features The Bravo Company BCM Mk12 18 Stainless Steel Barrel kit enables you to upgrade your AR-15 with the same barrel BCM puts on their Precision rifles. The barrel comes ready to install on your rifle with BCM low-profile gas block and a gas tube. Bravo Company's BCM Mk12 18 Stainless Steel Barrel comes with a 5.56 NATO match (USMC SAM-R) chamber and hand-lapped 1-8 button rifling for superb accuracy potential. M4-type feed ramps ensure the rounds make their way into that chamber consistently and reliably. MK12 Stainless Steel Rifle Length Gas System Specifications Phosphate finished mil-spec low profile gas block Rifle-length gas system for gentler reliable cycling 18 length gives a balance of compactness and additional velocity for improved long-range performance .750 O.D. at gas port Barrel extension included & installed 1/2-28 tpi muzzle threads (muzzle device not included) Contour: M4 Finish: Silver Gas System Length: Rifle Length: 18 Make: AR-15 Muzzle Threads: 1/2-28 Twist: 1-8 Cartridge: 5.56 mm NATO