Bravo Company AR-15 18 Inch Rifle Length Barrel Kit

The Bravo Company BCM Mk12 18" Stainless Steel Barrel kit enables you to upgrade your AR-15 with the same barrel BCM installs on their precision rifles. This barrel comes ready to install with a BCM low-profile gas block and gas tube. It's machined from extra-hard 410 stainless steel—more corrosion-resistant than the 416 alloy commonly used—and features a tough, abrasion-resistant, anti-friction IonBond PVD finish. The 5.56 NATO match (USMC SAM-R) chamber and hand-lapped 1-8" button rifling deliver excellent accuracy. M4 feed ramps ensure smooth and reliable feeding.

Other key features include a phosphate-finished mil-spec low-profile gas block, rifle-length gas system for smoother cycling, and a mid-weight profile that balances rigidity with manageable weight. The barrel includes a pre-installed extension and standard 1/2"-28 muzzle threads.