Ar-15/M16 Nib-XA(R) Bolt Assembly - Ar-15 Nib-XA(R) Complete Bolt

Nickel Boron exterior gives this bolt an incredibly hard finish that protects against wear and corrosion for the ultimate in durability. The extreme smoothness and built-in lubricity of the coating also reduces friction and gives carbon deposits nowhere to stick, so bolt can be easily wiped clean with a cloth or nylon brush. Comes complete with ejector, extractor, and gas rings installed. Mfg: Wmd Guns SPECS: Carpenter 158 steel, NiB-XA(R) coating. Ejector, extractor, and gas rings included. Fi