Hard-Chromed For Decreased Wear & Easier Cycling
High-quality, mil-spec components are hardened and heat treated, then hard-chrome plated. Reduces co-efficient of friction and makes the surface of the part almost impervious to wear.
AR-15, Issue:10, Page:012
Big Book Catalog, Issue:68, Page:013
SPECS: 8620 steel, hardened, hard-chrome plated, silver color. Magnetic particle inspected. Fits all AR-15 and M16 bolt carriers.