TTI RMR Co-Witness Fiber Optic Sights for Glock (RMR-Cut Only)
Not Yet Rated | Write the First Review SKU: 222-TAR-GSSF-004
MFG#: GSSF-004

TTI RMR Co-Witness Fiber Optic Sights for Glock (RMR-Cut Only)

Take your aim to the next level with the TTI RMR Co-Witness Fiber Optic Sight Set, specifically designed for Glock slides with an RMR cut. Whether you're a competitive shooter, armed professional, or simply a Glock enthusiast, these sights deliver unmatched precision, visibility, and co-witness reliability — all without overcomplicating your setup.

⚠️ Important Fitment Note: This RMR Co-Witness option is made only for Glock slides with an RMR cut, like the one we offer. It is not compatible with Glock MOS slides.

💡 Designed for Precision: Why These Sights Matter

Unlike suppressor-height sights that can feel oversized or clutter your view, our lower 1/3 co-witness RMR sights strike the perfect balance. They allow you to co-witness your optic without sacrificing speed or target clarity. In the event of a red dot failure, you'll be able to transition seamlessly to your backup iron sights without losing alignment.

🔧 Key Features

• Optimized for RMR-Cut Glock Slides
  Designed to sit perfectly in the lower 1/3 of your optic window.

• High-Visibility Fiber Optic Front Sight
  Custom-designed for maximum light transmission — no embed, no dimming.

• Ultra-Precise Sight Picture
  .124" front sight width and .125" rear notch for crisp point-of-impact alignment.

• One-Handed Charging Rear Sight Design
  Slanted front edge allows tactical racking from belt, holster, or gear.

• Compatible Glock Models
  Works with Glock 17, 17L, 19, 20, 21, 22, 23, 24, 34, and 35 that have been cut for an RMR optic.

🧠 RMR Cut vs MOS — What's the Difference?

Many assume all optics-ready Glocks are alike, but there's a critical difference:

• RMR Cut Slides: Custom or aftermarket machining to fit Trijicon RMR or similar optics. These have a unique footprint and depth.

• MOS Slides: Glock’s modular optic system (MOS) uses adapter plates and sits optics higher on the slide.

👉 These sights are engineered for true RMR-cut slides — not MOS systems.

✅ Why TTI RMR Co-Witness Sights Are Better

Most aftermarket options compromise either form or function. Ours don’t.

• No exaggerated "suppressor height" bulk

• True 1/3 co-witness alignment — not guesswork

• Built to the exact specs used by world champion shooter Taran Butler

• Stainless screw reflects light to amplify brightness of the fiber optic rod

📦 What’s Included

• Front Fiber Optic Sight (.124" width)

• Rear Sight (.125" notch)

• Stainless Steel Mounting Screw

• Compatible with OEM Glock sight tools

❓ Frequently Asked Questions (FAQ)

1. Will this fit my Glock 19 MOS?

No — this product is not compatible with Glock MOS slides. It's designed exclusively for Glock slides that have been custom cut for an RMR optic, like the ones we machine.

2. What’s the difference between co-witness and absolute co-witness?

This is a lower 1/3 co-witness setup, meaning your irons appear in the lower third of the optic window. It gives you a cleaner view through the red dot while still offering reliable backup aiming.

3. Are these sights too tall for everyday carry?

Not at all. Unlike suppressor-height sights, these strike a balance between performance and concealability. They're ideal for EDC, competition, or duty use.

4. Will this work with other optics besides Trijicon RMR?

Yes, as long as your Glock slide is cut specifically for the RMR footprint. Many Holosun and similar red dots share the same footprint.

5. What fiber optic rod size is used?

Our front sight uses a standard fiber optic rod, specifically positioned to allow maximum light exposure and visual clarity.

🔚 Elevate Your Aim — Order Today

If you're running an RMR cut Glock and still relying on sights not built for co-witnessing, you're compromising performance. The TTI RMR Co-Witness Fiber Optic Sight Set is purpose-built to deliver confidence, clarity, and consistency shot after shot.