Zps.4 Slide Glock 19 Gen 3 9Mm Optic Ready Od Green

The Zaffiri Precision ZPS.4 slide for Glock 19 Gen 3 is a precision-engineered, optic-ready upgrade built for shooters who demand accuracy and reliability. Machined from billet 17-4 stainless steel and finished in Magpul OD Green Cerakote, this American-made slide combines tight manufacturing tolerances with a modern red dot mounting platform—ideal for competitive shooters, defensive pistol users, and hunters looking to add optical sighting to their carry or duty gun. The optic cut is pre-cut and pre-coated at Zaffiri's Florida facility, so it arrives ready to mount without additional gunsmithing.

The ZPS.4 accepts RMR-footprint optics including the Trijicon RMR and SRO, as well as Holosun's 407c and 507c—popular choices for durability and reticle options. The optic mounting location sits forward of the factory rear sight dovetail, preserving your iron sight picture and allowing co-witnessed aiming if you pair it with compatible night sights. The slide ships with mounting screws and a black anodized cover plate; Zaffiri specifies their proprietary fasteners for safe retention, and recommends blue Loctite and strict adherence to optic manufacturer torque specs.

Compatible with Glock 19 Gen 3 frames as well as Gen 1 and Gen 2 models, the ZPS.4 also pairs with popular aftermarket frames including the SCT 19, P80 PFC9, and PSA Dagger. The slide is ported-compatible and works specifically with ZP Ported barrels if you're building a compensated setup. Because it arrives pre-coated, the slide cannot be modified or reworked—order with confidence that your finish and dimensions are locked in.

Key Features

• Billet 17-4 stainless steel construction with tight tolerances for enhanced accuracy
• RMR-footprint optic cut pre-installed—compatible with Trijicon RMR, SRO, Holosun 407c/507c, and similar mounts
• Magpul OD Green Cerakote finish (pre-coated; no customization available)
• Optic mounting forward of rear sight dovetail for iron sight retention and co-witnessing
• Includes mounting screws and black anodized cover plate
• 100% American-made at Zaffiri Precision's Largo, Florida facility
• Compatible with Glock 19 Gen 3, Gen 2, Gen 1 frames and aftermarket models (SCT 19, P80 PFC9, PSA Dagger)
• Ported-compatible design for use with ZP Ported barrels

Specifications

Frequently Asked Questions

What red dot optics work with this Glock 19 optic-ready slide?

The ZPS.4 is cut for RMR-footprint optics. Compatible models include the Trijicon RMR, Trijicon SRO, Holosun 407c, and Holosun 507c, as well as other optics that share the RMR mounting pattern. The slide ships with the correct mounting screws; use only Zaffiri's screws and apply blue Loctite per the optic manufacturer's torque specifications.

Is this slide compatible with my Glock 19 Gen 3 frame?

Yes, the ZPS.4 is designed for Glock 19 Gen 3 frames and is also compatible with earlier Gen 1 and Gen 2 models. It also works with popular aftermarket frames including the SCT 19, P80 PFC9, and PSA Dagger.

What's included with the slide, and will I need additional parts to mount an optic?

The ZPS.4 includes mounting screws and a black anodized cover plate. To mount a red dot, you'll need an RMR-footprint optic and a barrel. The slide itself is unassembled and does not include a firing pin, springs, or other internal parts.

Can I have this slide modified or refinished in a different color?

No. The ZPS.4 arrives pre-cut and pre-coated in Magpul OD Green Cerakote, and Zaffiri does not offer modifications or alternative finishes on this model. The slide cannot be reworked after it leaves the factory.