AR15 Carrier w/ Staked Key (NB)

This Bolt Carrier Assembly has been precision machined from 8620 high-carbon steel to Semi Auto specifications and coated by Nickel Boron finish providing high-lubricity, a harder-than-chrome surface,and extreme corrosion resistance.
This is an assembled carrier with properly staked gas-key. It does not include bolt assembly, firing pin, cam pin, or firing pin retaining pin.
Carrier AR15 style carrier (heavy weight), 8620 material, heat treated and case hardened.
Manufacturing tolerances on inside diameters tightly controlled. NB coated for durability and ease of cleaning.
Staked per military specifications.