MDWS Black Nitride BCG - 5.56
MDWS is proud to announce its own line of Bolt Carriers/Groups in .223/5.56. Black Nitride carrier made of 8620 steel with 4130 steel keys properly staked. .223/5.56 bolt MPI tested and Marked (included - this is a complete BCG with firing pin/retainer and Cam Pin). Made by Toolcraft these BCG's come with a lifetime warranty - because you won't need it!