AR15 BOLT CARRIER GROUP MILSPEC M16
Chrome Lined. Bolt is marked "MP"
M16 Complete Bolt and Carrier • Military Spec • Bolt, Bolt Carrier and Firing Pin Ready to Drop Into the Rifle or Carbine Upper of your Choice • Staked Gas Key prevents Gas Leakage that leads to Short Stroking • Steel, Parkerized, Matte Black Finish. Fits AR-15 Upper Receiver Chambered for .223/5.56mm.