Grey's GGP19 stripped slide is machined from 17-4 billet stainless steel with a black nitride coating inside/out and has dual optic cutout for Trijicon RMR or Leupold DeltaPoint Pro. It comes with a custom G10 cover plate and proper screws for cover plate, and correct length screws for RMR and DPP. This Version 4 features front and rear "micro-studded scale" texture.