This Chrome Full Auto Bolt Carrier Group BCG is for the AR Family of Weapons (AR15, M16, M4).
- The Carpenter 158 bolt is Shot Peened, HP tested / MP inspected and Chrome plated for enhanced service life.
- Bolt Carrier Material: Hard Chromed outside and inside.
- The Mil-Spec gas key is full Chrome, secured with heavy splined fasteners (per mil-spec drawing), and properly staked to ensure reliable gas system performance.
- Bolt is marked “MP”. Carrier is marked “BRT” with a Logo on the ejection port side.
- 100% made in the USA to USGI M16 specifications.