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AR-15/M16 NiB-X® BOLT ASSEMBLY

AR-15/M16 NiB-X® BOLT ASSEMBLY Reviews & Ratings

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.


SPECS: Carpenter 158 steel, NiB-X® coating. Ejector, extractor, and gas rings included. Fits .223 5.56mm, 300 AAC Blackout, and similar AR platforms.


See all of our AR15s and AR15 parts here.

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This bolt doesn't fit with other carrier
I tried to install this bolt with different bolt carrier, like LWRC, AERO, Colt, FN, and PSA, it didn't fit for all those brands, too tight to be functioned, this bolt looks not 100% mil-spec,