Pioneer Arms imported AKM Pattern Bolt Carrier and Gas Piston. This bolt carrier comes with an AKM length gas piston pre-installed. When installing a new bolt carrier into any AK, verification of headspace and gunsmith assistance is always recommended due to potential tolerance changes. This Bolt Carrier & Piston will fit AKM rifles, and will NOT fit our Hellpup or Micro Hellpup series of AK pistols.
