Glock 19X MOS OEM Slide

The Glock 19X MOS OEM Slide provides a factory-precise upgrade with its optic-ready Modular Optic System cut. Because it accepts leading red dot platforms with Glock MOS plates, it gives shooters faster target acquisition and improved accuracy without compromising reliability.

This slide maintains Glock’s original nDLC finish, which resists corrosion and wear. Its clean factory machining and durable steel construction ensure dependable cycling under heavy use. As a result, it is the ideal upper for restoring a 19X slide or upgrading a pistol for modern optic capability.

Since it follows Gen 5 geometry, it fits Glock 19X, Glock 45, and compatible Gen 5 frames, offering a true OEM fit and long-term performance.

INCLUDED (COMPLETE SLIDE ASSEMBLY)

• Glock 19X MOS slide
• Glock Marksman Barrel (GMB)
• Recoil Spring Assembly (RSA)
• Firing pin assembly
• Extractor
• Firing pin safety
• Depressor plunger assembly
• Rear slide plate
• Channel liner
• Fixed Glock factory sights

INCLUDED (STRIPPED SLIDE)

• Glock 19X MOS slide
• Channel liner
• Fixed Glock factory sights

Note: Stripped slide does not include barrel, RSA, or internal components.

SPECIFICATIONS

• Model: Glock 19X MOS Slide
• Material: High-strength steel
• Finish: nDLC
• Optic System: MOS cut for plate-mounted optics
• Length: 6.85 inches
• Width: 1.00 inch
• Caliber: 9mm
• Compatibility: Glock 19X, Glock 45, and Gen 5 frames (not Gen 3/4)

Installation Steps for Glock MOS Slides (Brief Bullet Guide)

• Ensure the firearm is unloaded and remove the magazine before starting.
• Align the MOS slide with the frame rails and push it fully rearward until it locks.
• Select the correct MOS plate for your optic footprint (RMR, 507C, DPP, etc.).
• Install the plate using the factory screws and apply blue Loctite for secure mounting.
• Place your optic onto the plate and tighten the screws to the manufacturer’s torque value.
• Perform a function check and cycle the slide to confirm smooth operation.
• Zero your optic at the desired distance, typically 10–25 yards for defensive use.

Best Suppressor-Height Sights for MOS Co-Witnessing (Brief Bullet Guide)

• Choose sights tall enough to clear your red dot window, usually 0.315″–0.365″ heights.
• Look for steel construction for durability when used with MOS or duty pistols.
• AmeriGlo GL-429 and Trijicon Suppressor Night Sights are popular for Glock MOS models.
• Match sight height to your optic type—enclosed emitters often require slightly taller sights.
• Verify sight picture: lower-third co-witness is preferred for fast red-dot acquisition.
• Install using a proper sight pusher to avoid damaging the slide or tritium vials.
• After installation, confirm alignment and check accuracy with both irons and the red dot