Grey Ghost Precision Glock 17 Gen 3 Pistol Slide w/ RMR-DP Pro Cut Version 1 Black Nitride. They are machined from 17-4 Billet Stainless Steel to have tighter tolerances than a factory slide. They are Black Nitride coated inside and out. New dual optic cutout compatible with Leupold DeltaPoint Pro or Trijicon RMR with supplied shim plate (correct length screws included). Glock is a federally registered trademark of Glock Inc. and is one of many trademarks owned by Glock Inc. or Glock Ges.m.b.H. Grey Ghost Precision is not affiliated with nor endorsed by Glock Inc. or Glock Ges.m.b.H. Specifications for Grey Ghost Precision Glock Version 1 Pistol Slide w/ RMR-DP Pro Cut: Manufacturer: Grey Ghost Precision Gun Make: Glock Gun Model: Glock 17 Model Generation: 3 Optic Cut: Leupold DeltaPoint Pro Trijicon RMR Color: Black Finish: Black Nitride Fabric/Material: 17-4 Billet Stainless Steel Included Accessories: G10 cover plate with screws Mounting screws for optic Condition: New Package Contents: Grey Ghost Precision Glock Version 1 Pistol Slide w/ RMR-DP Pro Cut What firearm models does the manufacturer say Grey Ghost Precision Glock Version 1 Pistol Slide w/ RMR-DP Pro Cut is compatible with? The manufacturer says that Grey Ghost Precision Glock Version 1 Pistol Slide w/ RMR-DP Pro Cut is compatible with Glock 17Grey Ghost Precision GGP-17-3-OC-V1: Glock 17 Gen 3 Pistol Slide w/ RMR-DP Pro Cut Version 1 Black Nitride