Glock MOS Adapter Plate – Secure Red Dot Mounting for Your Glock

Looking to mount a red dot on your Glock MOS pistol? You need a Glock MOS adapter plate—a critical component for securely attaching optics like the Trijicon RMR, Holosun 507C, Leupold DeltaPoint Pro, and more to your slide.

At Mounts Plus, we offer the most reliable, precision-machined adapter plates compatible with Glock Gen 4 and Gen 5 MOS pistols, including G17, G19, G34, 43X MOS, and 48 MOS.

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🧩 What Is a Glock MOS Adapter Plate?

A Glock MOS (Modular Optic System) adapter plate is a mounting interface that bridges your Glock slide to your red dot sight. These plates align perfectly with optic footprints and provide the durability and zero retention needed for defensive and competition shooting.

✅ Allows direct mounting of red dot optics
✅ No slide milling required
✅ Ensures proper bore alignment and torque fit
✅ Fits Glock factory MOS-cut slides

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🔧 Adapter Plate Compatibility Chart

💡 Note: Always match your optic’s footprint to the correct plate type (RMR, K-series, ACRO, etc.).

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🔍 Top Glock MOS Plates We Carry

🔩 C&H Precision V4 RMR Plate for Glock MOS

• Compatible with Trijicon RMR, Holosun 507C, 508T

• Made from 7075 aluminum, steel thread inserts

• Rear sight forward or rear configurations

🔩 C&H Precision 43X/48 MOS EPS Plate

• Built for micro optics like Holosun EPS & 407K

• Fits Slimline Glock MOS models (43X, 48)

• Black nitride finish for corrosion resistance

🔩 Aimpoint ACRO Glock MOS Adapter Plate

• Designed for duty-grade ACRO P1 and P2

• Precision steel mount for Glock MOS systems

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⚙️ Why Upgrade with a Glock MOS Adapter Plate?

Mounting directly to the slide gives you:

• Faster target acquisition

• Improved accuracy

• Better sight picture under stress

• No need for suppressor-height irons (with proper co-witness setups)

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🛠 How to Install a Glock MOS Plate

Tools You Need:

• Glock MOS plate screws (included)

• T10 or Torx driver

• Blue Loctite

• Torque wrench (15–20 in/lbs)

Steps:

1. Remove factory MOS cover plate.

2. Align adapter plate with slide cut.

3. Insert screws and apply Loctite.

4. Torque to spec and test mount.

5. Install optic and re-zero.

✅ Installation is quick and can be done in under 5 minutes.

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❓ Glock MOS Plate FAQs

What is a Glock MOS adapter plate?

It’s a mounting plate that lets you install a red dot sight onto a Glock pistol with an MOS-cut slide.

Do I need a plate for every optic?

Yes. Each red dot has a unique footprint, so you must match the optic to a compatible adapter plate.

Can I use the same plate across Glock models?

You can if they share the same MOS cut (e.g., G19 and G17). Slimline models (43X/48) require smaller plates.

Will these plates co-witness with my iron sights?

Some plates, like the RBU2, include integrated backup sights. Others require suppressor-height sights for co-witness.

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🛒 Shop Glock MOS Adapter Plates Now

We carry the most trusted Glock MOS adapter plates from C&H Precision, with proven reliability in the field. Choose your model, optic, and mount with confidence.