Sinner Mass is Veteran owned and operated by Lunk Hamilton in San Antonio, Texas who specializes in Cerkote, PVD, TiN and other coatings for firearms, sporting equipment, marine gear, tumblers, and other accessories. While based in San Antonio, Sinner Mass works nationwide delivering quality work on every piece. They also provide laser engraving, which can be done on firearms, frame stippling, and other materials. Their passion is creating one-of-a-kind products for their customers. They carry unique aftermarket slides, triggers, barrels, suppressors, along with other firearm parts.