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BCM 300 Blackout CQB12 MCMR.
BCM 300 Blackout CQB12 MCMR Specification.
Complete BCM® Rifles and Carbines include: Rifle, 1 Magazine (where allowed), Cable Lock, USGI Manual, and F.E.T.
BCM 300 Blackout CQB12 MCMR. BCM Upgrades. BCM MCMR Handguard. BCMGUNFIGHTER Charging Handle. BCMGUNFIGHTER 7.62 Compensator. Gunfighter Stock. BCMGUNFIGHTER Pistol Grip QD End Plate. PNT Trigger. Trigger Guard.
UPPER RECEIVER
Receiver Machined from Aluminum Forgings 7075-T6 and Hardcoat Anodized per MIL-A-8625F, Type III, Class 2

M4 Feed Ramp Flat Top with Laser T-markings

Pistol Length Gas System

BCM® BOLT CARRIER GROUP
Machined from MIL-SPEC Carpenter No. 158® Steel

HPT/MPI (High Pressure Tested/Proof) · (Magnetic Particle Inspected)

Shot Peened

Tool Steel Extractor w/ BCM® Extractor Spring

Black Extractor Insert

Chrome Lined Carrier (Full Auto Profile)

Chrome Lined Gas Key Hardened to USGI Specifications, w/ Staked Grade 8 Fasteners per MIL-SPEC

BCM® LOWER RECEIVER
Receiver Machined from Aluminum Forgings 7075-T6, Hardcoat Anodized (per MIL-A-8625F, Type III, Class 2)

Low Shelf for RDIAS Installation - Installation of a registered drop-in auto sear allows weapon to fire on full automatic

Low Shelf for Accuwedge use

Fire Controls Marked SAFE and SEMI

Staked M4 Lock Nut

USGI H Buffer (1 USGI Tungsten, 2 Steel)

BCM® BARREL
Independently Certified MIL-SPEC 11595E Barrel Steel, Manganese Phosphate Barrel Finish on Entire Barrel

12.5" BCM® Enhanced Profile Barrel 1/7 Twist, M4 Feed Ramp Extension

Chrome Lined Bore and Chamber