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Glock 19 Gen 3 Slides | RMR Cut, Windowed & Custom Options
Glock 19 Gen 3 Slides – Aftermarket Performance & Custom Slide Upgrades
Looking to upgrade or replace your Glock 19 Gen 3 slide? Whether you're rebuilding a custom Glock, replacing a worn OEM slide, or dialing in your setup for red dot optics, this collection delivers what you need. Our aftermarket slides for Gen 3 G19s are precision-machined, optics-ready, and compatible with standard Glock internals.
Premium Slides Built for Glock 19 Gen 3
Every slide we carry is designed for Glock 19 Gen 3 pistols and built with high-performance features. Options include:
- Stripped or complete slides (ready-to-assemble or fully built)
- RMR cut slides – Red dot ready right out of the box
- Window cuts for better slide weight balance and cooling
- Front and rear serrations for enhanced grip and slide manipulation
- Finished in durable coatings like black nitride, FDE, and stainless
These slides give your Gen 3 Glock an instant upgrade in form and function, whether you're building a carry pistol, range gun, or competition setup.
Why Choose Aftermarket Slides for Your Glock 19 Gen 3?
The Gen 3 Glock platform is one of the most customizable handguns available, and the slide is where performance and personalization come together. Our slides allow you to:
- Add red dot optics with RMR cuts
- Improve slide racking with forward serrations
- Reduce recoil with windowed cuts and balanced geometry
- Match your frame and barrel with custom finishes
- Refresh your slide without needing to buy a new pistol
Compatibility & Fit
✅ Fits:
- Glock 19 Gen 3 frames
- OEM Glock internals and aftermarket Gen 3 parts
- Most Glock-pattern barrels, recoil springs, and small parts
❌ Does NOT fit:
-
Gen 4, Gen 5 Glock frames
-
Polymer80 PF940C or other non-Gen 3-compatible builds unless specified
Available Options
You’ll find a wide range of styles and functions to fit your build:
- RMR Cut Slides – Ready for Trijicon RMR or Holosun optics
- Windowed Slides – Reduce reciprocating mass, increase style
- Serrated Slides – Aggressive texturing for improved slide manipulation
- Finished Slides – Choose from black, FDE, OD green, stainless, and more
If you’re rebuilding a slide from scratch, look for complete slide kits that include internal components, firing pin assembly, and extractor. Or, if you're starting with your own internals, pick up a stripped slide and start customizing.
Frequently Asked Questions
Will these slides fit Gen 4 or Gen 5 Glock 19 frames?
No. These slides are specifically cut for Gen 3 Glock 19 frames and are not compatible with later generations.
Are these slides optics-ready?
Many of them are — look for RMR cut or red-dot ready options in the product listings.
Can I use factory Glock parts to complete the slide?
Yes. Most slides are compatible with OEM Glock Gen 3 slide internals.
Do I need a special barrel for these slides?
No. Any Gen 3 Glock 19-compatible barrel (OEM or aftermarket) will fit.
Are these slides legal to use in a new build?
Yes, but be sure your completed firearm complies with local laws, especially for home-built or 80% lowers.
Build Your Glock 19 Right
Whether you're repairing, replacing, or customizing, our Glock 19 Gen 3 slides offer unbeatable quality, compatibility, and value. From RMR-cut competition slides to stripped, no-frills options — we’ve got your next upgrade covered.
Browse our full selection and find the right slide for your Gen 3 Glock 19 today.
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