BCM® MK2 Standard 16" 300 BLACKOUT Complete Upper Receiver Group w/ QRF-12 Handguard

About the BCM® MK2 Standard 16" 300 BLACKOUT Complete Upper Receiver w/ QRF-12 Handguard

• 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).

Included with this complete upper group:

• QRF-10 Handguard
• BCM® Comp Mod 1 - 762/300 BLK

Featuring BCM’s Patented MK2 Upper Receiver

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 H3 buffer with high velocity ammo. If running subsonic ammunition, it is recommended to run your suppressor and a carbine 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.

Specs:

• Caliber: 300 Blackout
• Barrel Length: 16.1+"
• Barrel Material: 11595E Spec Steel
• Barrel Finish: Manganese Phosphate per Mil-Spec
• Bore & Chamber: Chrome Lined
• Weight: 3 lbs
• Twist Rate: 1:7
• Gas System: Pistol
• Muzzle Device: BCM® Comp Mod 1 (762/300BLK)
• Muzzle Threads: 5/8x24
• Handguard: QRF-12