Holosun 407/507K Adapter for Glock MOS

Holosun 407/507K Adapter Plate for Glock MOS is a pistol optic mounting accessory designed to adapt Holosun K-footprint micro red dot sights to Glock MOS slide patterns. This adapter allows compatible Holosun optics to be securely installed on MOS-equipped Glock pistols, expanding optic options for users who prefer compact micro red dots.

Manufactured by Holosun, this one-piece adapter plate provides a stable mechanical interface between Holosun 407K and 507K optics and Glock MOS-cut slides. The design is intended to maintain proper optic alignment while offering a low-profile mounting solution suitable for range use, duty configurations, or everyday carry setups on compatible Glock pistols.

Key Features

• Fits Holosun 407K and 507K micro red dot optics

• Designed for Glock MOS slide patterns (optic-ready Glock pistols)

• One-piece adapter plate for consistent fit and rigidity

• Black finish to match common slide and optic finishes

• Chamfered edges to reduce snagging during holstering and draw

• Installation hardware included for both plate-to-slide and optic mounting

• Compatible with most MOS-ready holsters

• Not compatible with Glock 43X MOS (explicit exclusion)

• Backed by a manufacturer-stated lifetime warranty

Specifications & Construction

• Product Type: Optic adapter plate

• Compatible Optics: Holosun 407K, Holosun 507K

• Slide Interface: Glock MOS

• Configuration: One-piece plate

• Color / Finish: Black

• Overall Dimensions: Approx. 1.65 × 2.15 × 2.70

  • Height: 1.6500

  • Width: 2.1500

  • Length: 2.7000

• Mounting Hardware: Included

The one-piece construction provides a solid mounting surface for micro red dots while keeping the overall profile suitable for concealed carry and duty holsters designed around MOS-equipped slides.

Compatibility & Intended Use

This adapter plate is specifically designed to mount Holosun 407K and 507K optics to Glock MOS pistols. It is intended for Glock handguns with factory MOS slide cuts and is not compatible with Glock 43X MOS models.

Typical use cases include:

• Optics-ready Glock pistols used for range practice

• Duty or service pistol configurations

• Everyday carry pistols equipped with micro red dots

Users should confirm pistol model compatibility prior to installation and follow proper torque and mounting procedures.

What’s Included

• One (1) Holosun 407/507K Glock MOS adapter plate

• Mounting hardware for plate and optic installation

• Manufacturer documentation

The Holosun 407/507K Adapter Plate for Glock MOS offers a straightforward and secure solution for mounting Holosun K-series micro red dots on MOS-equipped Glock pistols, enabling compact optic use without modifying the slide.