About the BCM® Standard 7″ 300 BLACKOUT Complete Upper Receiver w/ KMR-A5 Handguard
- Continuous taper barrel profile designed for optimal weight, balance, and performance.
- Tapered barrel profile out front, for easier maneuverability.
- No sharp handguard cap shoulder for improved barrel harmonics and improved accuracy.
- Muzzle threaded in standard 30 cal (5/8×24).
- KMR-A5 KeyMod™ Handguard.
- KMSM (KeyMod™ Sling Mount)
- One 3″ Picatinny Rail Section
- 762/300BLK Flash Hider
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 High Velocity ammo only with a H3 buffer.
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.
- Caliber: 300 Blackout
- Barrel Length: 7″
- Barrel Material: 11595E Spec Steel
- Barrel Finish: Manganese Phosphate per Mil-Spec
- Bore & Chamber: Chrome Lined
- Weight: 2 lbs
- Twist Rate: 1:7
- Gas System: Pistol
- Muzzle Device: 762/300BLK Flash Hider
- Muzzle Threads: 5/8×24
- Handguard: KMR-A5
