Fits Glock 17 and Glock 22 Gen 1, Gen 2, and Gen 3 OEM frames plus Polymer80 PF940V2 aftermarket frames. Not compatible with Gen 4 or Gen 5. This is a stripped slide; a 9mm barrel and slide completion kit are sold separately. Finish is hard black DLC (Diamond-Like Carbon) on 416 stainless. DLC runs harder and more wear-resistant than nitride or Cerakote, which matters when the slide is cycling under heavy use or carry rotation. The top window drops slide weight, improves cooling, and exposes the barrel on two-tone builds. Slide specs: Hard black DLC over 416 stainless steel Trijicon RMR footprint cut with matching cover plate installed Top window - weight reduction, cooling, two-tone aesthetics Standard Glock iron sight dovetail cuts, front and rear Front and rear diagonal serrations Chamfered edges for cleaner holster draw 9mm chambering To finish the build: Glock 17-pattern 9mm barrel (standard or threaded), slide completion kit, iron sights or RMR-footprint optic. Optic mount screws: 6-32 x 1/3 in cover plate, 6-32 x 7/16 in optic. Use the optic manufacturer's screw kit when available. Lube the rails before install and hand-cycle the slide 20-30 times to confirm clean travel. Re-check RMR screw torque after the first range session. DISCLAIMER: "GLOCK" is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.