These 5.56/300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel.
Determined at checkout.
Some US states prohibit perceived advertising or marketing of firearm related products to persons under 18 years of age.
Please verify that you are at least 18 years of age.
