Description
The Zaffiri Precision ZPS3 slide is a precision-engineered upgrade designed for serious Glock 19 Gen 3 builders. Machined from a single billet of 17-4 stainless steel, this slide combines strength with tight tolerances that improve both accuracy and reliability. Each slide is finished in premium Cerakote with aggressive window cuts and serrations front and back, giving you excellent grip and slide manipulation even with gloves.
RMR Cut Optics Platform
This slide comes pre-cut for the Trijicon RMR footprint, which also accommodates popular alternatives like the Holosun 407c and 507c red dots. The optic mounting position is forward of the factory rear sight location, leaving the dovetail behind the cut for co-witnessing with suppressor-height irons. You get the mounting screws and black anodized cover plate included, so you're ready to add your optic without any delays.
Built for Performance and Durability
Manufactured at Zaffiri Precision's facility in Largo, Florida, this slide is stripped and ready for your channel liner and preferred internals. The design is clean and minimalist without being overly aggressive in appearance. The Armor Black Cerakote finish provides corrosion resistance and a professional tactical look that works for carry, competition, or range builds. This particular model is not compatible with ported barrels, so pair it with a standard barrel for proper function.
Whether you're building your first custom or upgrading an existing G19 Gen 3, the ZPS3 slide delivers the precision fit and refined functionality that separates quality builds from the rest.
Key Specifications
- Manufacturer: Zaffiri Precision
- Model Number: SL-G19G3-ZPS3-RMR-BLK
- UPC: 810220060544
- Platform: Glock 19 Gen 3
- Slide Series: ZPS.3
- Optic Cut: RMR Footprint (Trijicon RMR, Holosun 407c/507c compatible)
- Material: 17-4 Stainless Steel
- Finish: Armor Black Cerakote
- Type: Stripped Slide (no internals)
- Porting: Non-ported
- Manufacturing: Made in USA, Largo, FL
- Serrations: Front and rear aggressive serrations
- Cover Plate: Black anodized optics cover plate included
- Mounting Screws: Included and pre-fitted
What’s Included
- Zaffiri Precision ZPS.3 stripped slide
- Black anodized optics cover plate
- Mounting screws for RMR pattern optics
- Blue Loctite recommended for installation
Frequently Asked Questions
What optics are compatible with the ZPS3 RMR cut?
The RMR cut accommodates Trijicon RMR, Trijicon SRO, and Holosun 407c/507c red dots. Any optic using the standard RMR footprint will mount correctly. The mounting position is forward of the factory rear sight dovetail, allowing you to keep iron sights behind the cut for backup.
Is the ZPS3 slide compatible with ported barrels?
No, the ZPS3 is not ported compatible. Zaffiri's ported barrels work only with the ZPS.P and ZPS.4 slide models. For the ZPS3, use a standard non-ported barrel.
Can this slide work with Polymer 80 frames?
Yes, the ZPS3 works with both factory Glock 19 Gen 3 frames and compatible Polymer80 PF940c frames. Gen 4 slides will not fit Gen 3 frames, so make sure you're pairing a Gen 3 slide with your Gen 3 frame.
What's included with the slide purchase?
The slide comes stripped without internals, but includes the black anodized optics cover plate and the correct mounting screws for your RMR optic. You'll need to install your own channel liner, firing pin assembly, and other internal components.




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