Dpms Ar-15/M16 5.56 Bolt Assembly

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Steel, Teflon-coated, to eliminate bind on bearing surfaces which can prevent reliable cycling. Mil-spec bolt assembly is machined to strict tolerances for a drop-in fit and requires no gunsmithing. Mfg: Dpms SPECS: Steel, Teflon-coated, matte black. 5.56mm/.223 bolt assembly meets mil-spec #8448510.