KAK INDUSTRY K-SPEC Enh BCG AR-15 5.56/300 Blk Bolt NP3 Silver

KAK INDUSTRY K-SPEC Enhanced Bolt Carrier NP3 Silver

KAK INDUSTRY K-SPEC Enhanced BCG fits AR-15 7.62x39 NP3/Silver

KAK K-SPEC AR-15 Bolt Carrier Group 5.56x45mm NATO Phosphate Black

Radian Weapons Enhanced Bolt Carrier Group Black .223/5.56NATO

KAK Industry AR-15 5.56 / .300 BLK KAK Marked Bolt Carrier Group

2A ARMAMENT AR15 Regulated Lightweight Steel BCG

Alex Pro Firearms Bolt Carrier Group, Black