Battle Arms Development M4/M16 Milspec Bolt Carrier Group BCG Black BAD-BCG-M16. 56 Bolt is machined from 9130 tool steel HPT tested/MPI marked Black o-ring insert on extractor made in specialized factories Specifications for Battle Arms Development...
Battle Arms Development M4/M16 Milspec Bolt Carrier Group BCG Black BAD-BCG-M16. 56 Bolt is machined from 9130 tool steel HPT tested/MPI marked Black o-ring insert on extractor made in specialized factories Specifications for Battle Arms Development...