Glock Red Dot Adapter-MRA

Product Description

The Glock Red Dot Adapter-MRA is an optic plate designed to mount a mini red dot sight to compatible Glock pistol slides. It bridges the gap between factory slide cuts and aftermarket micro red dots, giving you the mounting platform you need without sending the slide out for machining.

This adapter is finished in red. It provides a stable base for optics that use a specific mounting footprint.

Adapter plates like this suit shooters who want to add a red dot to an existing Glock without milling the slide. They also work for anyone whose preferred optic doesn’t match the factory cut on newer MOS models.

Key Facts

• Product Name: Glock Red Dot Adapter-MRA
• SKU: OTL-RDMB-GL01a
• Finish: Red
• Category: Optic Plates & Adapters

How Glock Red Dot Adapter Plates Work

An adapter plate sits between your slide and the red dot optic. It converts one mounting pattern to another. Most factory MOS slides have a standard recoil-lug pattern; many popular micro dots use proprietary footprints. The adapter fills that gap.

Installation typically involves removing the factory cover plate, placing the adapter over the slide cut, and securing both the adapter and optic with screws. Proper torque and thread-locker are essential to prevent loosening under recoil.

If you need guidance on fit or installation, call 817-393-4000 to confirm compatibility with your specific Glock model and red dot sight.

Choosing the Right Optic Plate for Your Glock

Not all adapter plates fit all Glock slides or all red dot sights. The MOS system, standard milled slides, and aftermarket cuts each use different mounting dimensions. The optic footprint matters just as much—RMR, Shield RMS, Holosun K series, and others each require specific hole spacing.

Before you order, verify your slide’s mounting pattern and the footprint of your red dot. The SKU on this adapter is OTL-RDMB-GL01a; confirm that matches your setup by calling our shop at 817-393-4000.

Western Sport stocks a range of optic plates and adapters for popular handgun platforms, and we can help you find the right match for your build.

Buying from Western Sport in Roanoke, TX

Western Sport is a licensed FFL/SOT dealer and gunsmith shop serving North Texas and the DFW area since 2007. Owner and gunsmith Lance Rankin and his team handle transfers, custom builds, and technical questions in-house. Call 817-393-4000 for compatibility checks, ordering, or gunsmithing services.

Frequently Asked Questions

Q: Which Glock models does the Glock Red Dot Adapter-MRA fit?

A: The specific Glock models compatible with this adapter should be confirmed before purchase. Call 817-393-4000 with your slide model and optic footprint, and we will verify fitment for you.

Q: What red dot sights work with this adapter plate?

A: Compatibility depends on the optic footprint and the hole pattern on this adapter. Not all micro red dots share the same mounting dimensions. Call our shop at 817-393-4000 with your optic model to confirm it will mount correctly.

Q: Does the red finish affect durability or function?

A: The red finish is a cosmetic detail and does not change the mechanical function of the adapter. Finish durability depends on the coating type and application process. For specifics on this adapter’s coating, call 817-393-4000.

Q: Can I install this Glock optic adapter myself?

A: Installation requires removing the slide cover plate, positioning the adapter, and torquing screws to spec. Many shooters do this at home with basic tools and proper torque values. If you prefer professional installation or lack the tools, Western Sport offers gunsmithing services in Roanoke. Call 817-393-4000 to schedule.

Q: How does an adapter plate compare to direct slide milling for a red dot?

A: Direct milling cuts the slide to match one specific optic footprint, creating a lower profile and eliminating an extra layer. Adapter plates add a small amount of height but allow you to swap optics or retrofit a slide without permanent machining. Plates are faster and reversible; milling is permanent and custom-fit.

Q: How do I order the Glock Red Dot Adapter-MRA from Western Sport?

A: You can order through our online shop or by calling 817-393-4000. Our team can answer technical questions, verify compatibility, and walk you through the checkout process. Western Sport is located in Roanoke, Texas, and we serve customers across the DFW area and beyond.

Material: Billet 7075-T6 aluminum.  Dovetail is made of Steel with hardened dowel pins.
Finish: Black Anodize
Coating: Anodize
Dimensions:  Length:  2.0215″
Additional Tools: T-10 Torx driver (not included)

Additional information