Bushmaster Model XM15-E2S Stripped Lower Receiver, hammer forged from high quality 7075-T6 aluminum to military specifications with a hard coated anodized matte black finish -Pistol Grip -Six Position Collapsible Stock  -Muti Caliber  Buffer detent slightly back too far, so buffer may show wear after use (will not affect function).  Factory BLEM.  BLEMISHED, sold As-Is NO RETURNS. Made in the U.S.A.