Engineered for consistent function across varied conditions, the Battle Arms Development BAD M4/M16 STANDARD BCG promotes reliable operation.\n\nDeveloped for shooters who value predictable performance during regular practice, the Battle Arms Development BAD M4/M16 STANDARD BCG offers practical handling. Battle Arms Development is known for its reliability and innovation in firearm components.\n\n- Manufacturer: Battle Arms Development\n- Model: BAD M4/M16 STANDARD BCG\n- Product Type: Bolt Carrier Group\n- Material: 8620 Steel, 9310 Steel\n- Finish: Black Nitride\n- Unique Features: Precision SWISS CNC machined, Anodized Black\n- What's In The Box: Bolt Carrier Group, Firing Pin, Cam Pin, Extractor, O-Ring, Retainer