Upgrade your Glock Gen 3 platform with the Marksman V4 Slide, engineered to deliver unmatched precision, reliability, and durability. This premium slide (part number 100036531) is a direct, drop‑in replacement for the factory slide, providing a seamless fit without the need for extensive modifications.

Key Features & Benefits

• Exact OEM Fit: CNC‑machined to Glock’s original specifications, guaranteeing a perfect match for Gen 3 G21 models.
• Enhanced Strength: Constructed from high‑grade 7075‑T6 aircraft aluminum alloy, delivering superior resistance to wear and stress.
• Improved Accuracy: Precision‑engineered slide rails and lock-up surfaces reduce wobble, resulting in tighter groupings.
• Corrosion‑Resistant Finish: Hard‑coat anodized surface protects against moisture, salt, and harsh environments.
• Lightweight Design: Optimized mass for faster cycling while maintaining structural integrity.
• Ready for Customization: Compatible with aftermarket sights, slide cuts, and accessory rails.
• Rigorous Quality Control: Each slide undergoes a multi‑stage inspection process, including dimensional checks and functional testing.

Why Choose Marksman V4?

When it comes to firearm components, reliability is non‑negotiable. The Marksman V4 Slide stands out because it combines the exacting standards of OEM parts with the performance upgrades prized by serious shooters. Whether you’re a competitive shooter, a tactical professional, or a dedicated enthusiast, this slide offers the confidence you need in every shot.

Technical Specifications

Installation Guide

1. Ensure the firearm is unloaded and the magazine is removed.
2. Disassemble the pistol by removing the slide stop lever and separating the slide from the frame.
3. Detach the factory slide from the recoil spring assembly.
4. Insert the Marksman V4 Slide onto the recoil spring assembly, aligning the guide rails.
5. Reassemble the slide onto the frame, re‑engage the slide stop lever, and perform a function check.
6. Confirm proper lock‑up and smooth cycling before returning to service.

Customer Reviews

"The new slide feels like a factory part, but the added precision is noticeable on the range. Highly recommend for anyone looking to upgrade their Glock Gen 3." – James T., Competitive Shooter

"Excellent fit and finish. The anodized coating held up after months of carry in humid conditions." – Maria L., Law Enforcement Officer

Frequently Asked Questions

Is this slide compatible with aftermarket pistols?

Yes, the Marksman V4 Slide fits all standard Glock Gen 3 G21 models, including those equipped with aftermarket frames, provided the frame retains original dimensions.

Do I need to replace the recoil spring?

No, the slide is designed to work with the existing recoil spring. However, if you are seeking a tuned recoil feel, upgrading the spring is an optional enhancement.

Can I install a night sight on this slide?

Absolutely. The slide includes factory‑sized dovetail cuts compatible with most night sight inserts.

Package Contents

• 1 x Marksman V4 Slide for Gen 3 G21 (Part No. 100036531)
• Installation instructions (PDF)
• Warranty card (2‑year limited)

Brand: Marksman

SKU: 100036531

Release Date: 2023-05-01

Upgrade your Glock Gen 3 today with the Marksman V4 Slide – where precision meets performance.