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.

Features:

• BCM® 300 Blackout Upper Receiver Groups
• 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 (5/8x24).
• Includes MCMR-5 Handguard
• Includes MCMR-SM (MCMR Sling Mount)
• Includes One 3" Picatinny Rail Section
• Includes 7.62/300BLK Flash Hider

Specifications:

• Caliber: 300 Blackout
• Barrel Length: 7"
• Barrel Material: 11595E Spec Steel
• Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)
• Bore & Chamber: Chrome Lined
• Weight: 2.2 lbs
• Twist Rate: 1:7
• Gas System: Pistol
• Muzzle Device: 762/300BLK Flash Hider
• Muzzle Threads: 5/8x24
• Handguard: MCMR-5