Grey's ggp19 stripped slide is machined from 17-4 billet stainless steel to have tighter tolerances and is cut.The slide is black nitride coated inside and out.It comes with a custom g10 cover plate and proper screws for cover plate and correct length screws for rmr and dpp.This version 3 features front and rear serrations with tapered depth (deeper serrations at top).Finish: Black NitrideModel: GGP19Material: 17-4 Stainless Steel