About the BCM® MK2 Standard 12.5" 300 BLACKOUT Complete Upper Receiver w/ KMR-A10 Handguard
- Continuous taper barrel profile designed for optimal weight, balance, and performance.
- Barrel profile fluted toward the rear near chamber area - Increases strength and heat dissipation.
- 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).
- KMR-A10 KeyMod™ Handguard.
- KMSM (KeyMod™ Sling Mount)
- One 3" Picatinny Rail Section
- BCM® Comp Mod 1 - 762/300 BLK
Featuring BCM’s Patent Pending MK2 Upper Receiver
- Caliber: 300 Blackout
- Barrel Length: 12.5"
- Barrel Material: 11595E Spec Steel
- Barrel Finish: Manganese Phosphate (Mil-Spec A-A-59267)
- Bore & Chamber: Chrome Lined
- Weight: 2.5 lbs
- Twist Rate: 1:7
- Gas System: Pistol
- Muzzle Device: BCM® Comp Mod 1 (762/300BLK)
- Muzzle Threads: 5/8x24
- Handguard: KMR-A10
Shop Related Products:
Want to see more upper receivers? Click the links below to view more BCM® AR complete uppers!
- 12.5" Carbine Complete Uppers
- AR-15 Complete Uppers w/ KeyMod™ Handguards
- 300 BLACKOUT Complete Uppers
- BCM® MK2 AR-15 Complete Uppers
- All BCM® AR-15 Complete Uppers