Fits Glock 17 Gen 3 frames and accepts Gen 3 factory or aftermarket barrels and parts. Machined from 17-4 stainless, in-the-white, with a featureless exterior - a clean canvas for custom cocking serrations, optic cuts, window cuts, or your own slide profile work. Finish: bare stainless ("in-the-white"). Apply Cerakote, DLC, or nitride after machining. Specs Material: firearm-grade 17-4 stainless steel Heat treat: 41-44 HRC Fits: Glock 17 Gen 3 frames Interior: machined to factory dimensions - accepts Gen 3 factory barrels, recoil assemblies, and aftermarket internals Includes Glock factory front and rear sight dovetails Exterior: featureless - no serrations, no optic cut, no window cuts Finish: in-the-white (apply your own coating after machining) Final-fit and any exterior machining is on you - this is a canvas blank, not a drop-in slide. Confirm your lower is a Glock 17 Gen 3 pattern. After machining and coating, run a 100-round break-in with standard 9mm ball to verify lockup, extraction, and timing before duty use. See our slide break-in guide for the full procedure. 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.