Assembled Stiffler Manufacturing Zoom slide for the Glock 19 Gen 3 — RMR-cut, built in-house at 3CR Tactical with our slide completion kit already installed and function-checked. Ships without a barrel so you can pair your preferred 9mm barrel: OEM, drop-in aftermarket, or a threaded barrel for a comp or suppressor build. Direct fit on Gen 3 G19 frames — no fitting, no gunsmith work.

What's in the box:

• Machined from heat-treated 17-4 PH stainless bar stock — tougher than the 416 stainless commonly used for pistol slides
• Stiffler Manufacturing Zoom slide, RMR-cut, black finish
• 3CR Tactical slide completion kit installed (firing pin, extractor, plunger assembly, recoil rod, cover plate)
• Standard-height polymer front and rear sights, installed
• RMR-pattern optic cover plate — remove when mounting a Trijicon RMR / SRO or RMR-footprint red dot
• No barrel included. Recoil spring assembly is included.

Fitment: Glock 19 Gen 3 frames only. Not a Gen 4 or Gen 5 fit — the Gen 4/5 slide rail cutouts and recoil-spring geometry differ. Optic cut is the Trijicon RMR / SRO footprint (matches Holosun 407C/507C, Swampfox Justice, and other RMR-pattern optics). Optic mounting hardware is 6-32; use a 1/3" screw for the cover plate and a 7/16" screw for an installed optic to seat properly through the slide.

Break-in: Lube the rails and lockup lugs before first use and run 50-100 rounds to bed the extractor and striker channel. Verify function with your chosen barrel and carry load before trusting the build for daily carry.

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