The Colt 5.56 Bolt Carrier Group is a factory replacement or spare BCG for AR-15 and M16 platform rifles.
- Part Type: Bolt Carrier Group
- Compatible Firearms: AR-15, M16, 5.56 NATO/.223 Remington chamberings
- Material: Steel
- Finish: Phosphate
- Installation: Drop-In (verify headspace)
- Includes: Bolt, carrier, cam pin, firing pin, retaining pin
