Fits Glock 17 Gen 1, Gen 2, and Gen 3 OEM frames plus Polymer80 PF940V2 builds. Not compatible with Gen 4 or Gen 5: the rail and recoil layout changed. This is a stripped slide; a 9mm barrel and slide-completion kit are sold separately. Choose your finish above: Black DLC (Diamond-Like Carbon) bonded to 416 stainless: harder than nitride, more scratch-resistant than Cerakote, and doesn't lift under repeated holster draws. FDE PVD (Flat Dark Earth, physical vapor deposition), with chamfered edges. The RMR optic cut accepts Trijicon RMR / RM06 red dots directly; the cover plate ships installed for iron-sight-only use. Fit: Glock 17 Gen 1, Gen 2, Gen 3 OEM + Polymer80 PF940V2 Not compatible with Gen 4 / Gen 5 Optic cut: Trijicon RMR footprint (6-32 x 1/3" plate screws, 6-32 x 7/16" optic screws) Includes: cover plate installed Sight cuts: standard Glock front dovetail + rear dovetail Front and rear serrations Material: 416 stainless Completion kit pairing: pairs with the 3CR Tactical Slide Completion Kit for Glock 17/22 Gen 3-4 (SKU 3CR-GLK-SLD-KIT: firing pin, extractor, plunger, spring, and cover plate). Barrel pairing: the 3CR 9mm drop-in G17 barrel (SKU GLK-17-RPL) or threaded 1/2x28 variant (GLK-17-THD) both drop straight in. Lubricate the rails before installing, then cycle 20-50 rounds after full assembly to confirm reset and extraction before defensive carry. 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.