This complete mil-spec AR-15 bolt carrier group has the quality & durability that Broomfield Arms' products are known for. This precision-made bolt carrier group comes fully assembled and ready to drop in your AR-15 rifle.

• Milspec Carpenter No. 158® steel bolt

• Shot Peened Bolt

• High pressure tested

• Mag particle inspected

• Chrome Lined Carrier (AUTO)

• Chrome Lined Gas Key

• Gas Key Hardened to USGI Specifications