PVD (Physical Vapor Deposition) coating is an advanced surface engineering technology that offers transformative benefits for firearm components. Its application on critical shotgun and pistol accessories—such as slides, barrels, triggers, bolts, receivers, sights, and magazine components—significantly enhances performance, durability, and aesthetics. PVD coaters are used for gun accessories. The common color is golden, black. The easy way to obtain golden color is use arc ion...