The Battle Arms Development Enhanced Bolt Carrier Group is a precision-manufactured replacement BCG designed for M4, M16, and AR-15 pattern rifles.
- Part Type: Bolt Carrier Group
- Compatible Firearms: M4, M16, AR-15 pattern rifles
- Carrier Material: 8620 steel
- Bolt Material: 9310 steel
- Finish: Low-friction coating
- Installation: Drop-In
- Includes: Bolt carrier, bolt assembly, cam pin, firing pin, firing pin retaining pin
