Advantages Nickel Boron/Nitro Met on BCG and barrel for AR rifle.
Advantages and benefits of Ni B, nickel boron, and nitro met, salt bath nitride on AR bolt carrier group, barrel, and gas tube assemblies. This is an inexpensive modern technology process to protect the surface of alloy steel against wear as well as corrosion. The traditional manganese phosphate process on mil spec bolt carrier groups…
