Stag now manufactures their rifles and upper halves with these M16 bolt carrier groups

M16 carrier with a shrouded firing pin. So, it functions as a standard semi-auto AR-15 bolt carrier group in semi-auto rifles.

The salt path nitride process (also known as QPQ) creates a much harder surface that is, easy to clean, will run with less than ideal lubrication and resists wear for a lasting corrosion resistant durable finish.

For 5.56mm/.223 Remington/ 300 BLK calibers

Proper mil-spec staking of the gas key

Fully compatible with any any standard AR-15 upper, not just Stag brand uppers

Includes the Bolt carrier, bolt assembly, cam pin, firing pin, and firing pin retaining pin

Bolt carrier -- 8620 steel

Part No. STAG300858

UPC 811546026559