Shop › KAK AR9 BCG 9MM ENH NITRIDE BLK KAK AR9 BCG 9MM ENH NITRIDE BLK $153.00 sold out KAK Industry Enhanced 9mm, Bolt Carrier Group, Fits AR9, Nitride Finish, Black, Compatible with Colt and Glock Style Magazines MO-KAK9MMENHBCG Sold Out Added! KAK Industry Enhanced 9mm, Bolt Carrier Group, Fits AR9, Nitride Finish, Black, Compatible with Colt and Glock Style Magazines MO-KAK9MMENHBCG