Mount a Holosun 507K on your Glock 43X MOS

Published on May 19, 2023
Duration: 7:09

This video details the process of mounting a Holosun 507K onto a Glock 43X MOS, addressing the common fitment issue caused by the MOS cut's rear posts. GlockStore offers a 'Slimline MOS Retrofit' service to mill these posts and modify screws, ensuring a flush, low-profile optic mount. The Holosun 507K's circle-dot reticle is highlighted for its effectiveness in self-defense scenarios.

Quick Summary

The Glock 43X MOS slide requires modification for a flush Holosun 507K mount due to interfering rear posts. GlockStore's Slimline MOS Retrofit service mills these posts and adjusts screws, ensuring a low-profile, secure optic installation.

Chapters

  1. 00:00Intro: Glock 43X MOS & Holosun 507K Mount
  2. 01:27MOS Cut Fitment Problem Explained
  3. 02:05GlockStore Slimline MOS Retrofit Service
  4. 04:48Holosun Reticle Benefits
  5. 06:12Retrofit Service Details & Turnaround

Frequently Asked Questions

Why doesn't the Holosun 507K fit the Glock 43X MOS slide directly?

The factory MOS cut on the Glock 43X MOS has two rear posts that physically interfere with the base of the Holosun 507K, preventing it from seating flush on the slide without modification.

What is the GlockStore Slimline MOS Retrofit service?

It's a gunsmithing service where GlockStore CNC mills the interfering rear posts off the Glock 43X MOS slide and modifies the optic mounting screws to allow a flush fit for specific micro-red dot sights like the Holosun 507K.

How long does the GlockStore MOS Retrofit service take?

For mail-in customers, the typical turnaround time for the Slimline MOS Retrofit service is approximately 10 days. Walk-in customers at their Nashville location may be able to get same-day service.

What are the benefits of the Holosun 507K reticle?

The Holosun 507K offers a versatile circle-dot reticle system. This allows users to choose between a 32 MOA circle with a 2 MOA dot, just the circle, or just the dot, aiding in fast target acquisition, especially in self-defense scenarios.

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