Exacting construction and rigorous durability are the standard for every weapon system that comes off our line. BCM Professional Grade Weaponry are hard use tools, built to perform in combat where unfailing performance is the only standard for men and machine.
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
Mid 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
BCM Milspec 7075-T6 Receiver Extension
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
16" Standard Government Profile Barrel 1/7 Twist, M4 Feed Ramp Extension
USGI 5.56mm NATO Chrome Lined Bore and Chamber
HPT/MPI(High Pressure Test) (Magnetic Particle Inspected), per MIL-SPEC
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Very much worth it
I was suspicious when buying a California Compliant BCM, but it's built very well, and I would recommend this rife to Californians for many reasons.