Brownells RMR-cut window slide for the Glock 19 Gen 3 — drops onto factory Gen 1-3 G19 frames and Polymer80 PF940C / GST-9 builds without hand fitting. The optic pocket is milled for the Trijicon RMR footprint (also accepts Holosun 407C / 507C) and ships with a machined steel cover plate installed for slick-top carry until you mount glass.

Machined from 17-4 stainless billet to Glock Gen 3 OEM rail spec, then heat-treated 41-44 HRC and finished in matte QPQ Black Nitride. The wrap-around vertical serration pattern speeds chamber checks and slide manipulation, the top window trims slide mass for faster splits, and the iron sight cuts are factory G19 spec so your existing front + rear sights drop in.

• Fits: Glock 19 Gen 1-3 OEM frames and PF940C / GST-9 builds
• Optic cut: Trijicon RMR footprint (Holosun 407/507C compatible)
• Material: 17-4 stainless billet, 41-44 HRC, QPQ Black Nitride
• Cuts: factory iron sight dovetails, top window, wraparound serrations
• Includes: machined steel RMR cover plate

Slide ships stripped. Pair with a 9mm Glock 19 barrel and a 3CR Tactical Slide Completion Kit to finish the build. Suppressor-height iron sights are required when an RMR is mounted. Confirm frame compatibility before install and allow a 200-round break-in to seat fit between the slide and your chosen barrel.

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