407/507K Sight Mount MOS Adapter by Holosun Technologies

The Holosun 407/507K Sight Mount MOS Adapter is a precision-engineered mounting plate that allows you to securely attach Holosun 407K and 507K red dot sights to pistols equipped with the Glock MOS (Modular Optic System). Built from high-strength materials and machined to exact tolerances, this adapter ensures a perfect fit and reliable performance for your optic setup.

Whether you’re upgrading your EDC pistol or configuring a competition-ready sidearm, this MOS adapter plate provides a secure, low-profile interface between your Holosun K-series optic and your Glock MOS slide.

Features:

Compatible with Holosun 407K and 507K

Specifically designed for seamless mounting of Holosun’s popular micro red dot sights to Glock MOS pistols.

Fits Glock MOS System

Ideal for Glock models with factory MOS-cut slides, including the Glock 17, 19, 45, and more.

Precision Machined for Secure Fit

Built to tight tolerances for rock-solid optic mounting and consistent zero retention under recoil.

Durable Construction

Made from rugged, lightweight materials (typically steel or aluminum) to withstand repeated use and harsh conditions.

Low-Profile Design

Maintains a low optic height over bore, aiding faster target acquisition and improved co-witnessing with backup iron sights.

Easy Installation

Includes mounting screws and hardware for a hassle-free setup (verify fitment and torque specs per firearm and optic manufacturer).

Ideal for:

Glock MOS handgun owners, competitive shooters, concealed carry users, and tactical professionals using Holosun 407K or 507K red dots.

The Holosun 407/507K Sight Mount MOS Adapter is the essential solution for securely mounting your K-series optic to a Glock MOS pistol—offering precision fit, durable performance, and dependable alignment every time.