NOTE: This upper assembly has a barrel less than 16” in length. These uppers are intended for use in AR pistol or legal short-barreled rifle builds. Other configurations may violate Federal law.
This professionals-grade weapon is perfect for those who demand the best in terms of performance and durability.
The BCM 300 BLK is built around a 41V50 chrome moly vanadium steel barrel. This MIL-SPEC steel is stronger and will outlast most materials found in the commercial market. Additionally, the BCM KMR ALPHA Handguards are constructed from 100% aluminum and hardcoat anodized for an anti-reflective, corrosion resistant finish. KeyMod mounting slots on seven sides provide ample space for attaching all your favorite accessories.
Does not include a bolt carrier group or charging handle.
Notice from the manufacturer:
“BCM has taken great care to ensure the best possible performance and interchangeability. However, due to the large operational range of 300 Blackout ammunition in the market place, BCM cannot guarantee function will all ammunition types in all conditions. These barrels were designed to run with a carbine buffer with subsonic ammo and a H3 buffer with high velocity ammo. Fine tuning may be required in limited instances based on ammo and buffer choices that work best for the desired application. BCM also recommends running the Crane O-ring (provided with all BCM Bolt Carrier Groups) over the extractor with 300 Blackout.”