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Upgrade your AR-15 with the same barrel found on Bravo Company's precision rifles using the BCM Mk12 18" Stainless Steel Barrel Kit. The kit includes a barrel, a BCM low-profile gas block, and a gas tube, making it ready to install on your rifle.

Made from extra-hard 410 stainless steel, the BCM Mk12 barrel is more corrosion-resistant than the 416 stainless alloy commonly used on rifle barrels. It also has a tough abrasive-resistant, anti-friction IonBond PVD finish. The barrel comes with a 5.56 NATO match (USMC SAM-R) chamber and hand-lapped 1-8" button rifling that ensures superb accuracy potential.

The BCM Mk12 barrel features rifle-length gas system, along with phosphate finished mil-spec low profile gas block, ensures consistent and reliable cycling. The 18" length provides a balance of compactness and additional velocity for improved long-range performance. The barrel has a .750" O.D. at gas port, and it comes with a barrel extension that is already installed.

Additionally, the barrel has 1/2"-28 tpi muzzle threads, but the muzzle device is not included. The BCM Mk12 18" Stainless Steel Barrel is mid-weight, meaning it is rigid enough to resist accuracy-compromising heat warpage, but it is not so heavy that it makes the rifle itself difficult to lug around.