How to Install Holosun 507 COMP

Published on May 11, 2025
Duration: 2:00

This guide details the straightforward installation of the Holosun 507 COMP optic onto a Palmetto State Armory Dagger pistol. Key steps include verifying RMR footprint compatibility, selecting the correct screw length, and properly torquing the mounting screws to ensure a secure fit. The presenter, Brian from 1st Shot Tactical, emphasizes the importance of the correct footprint and screw specifications for a reliable optic mount.

Quick Summary

To install the Holosun 507 COMP, ensure your slide has an RMR footprint. Use the correct screw length (shorter screws for PSA Dagger) and torque them to 13-15 inch-pounds using a torque screwdriver for a secure mount.

Chapters

  1. 00:00Introduction & Optic Overview
  2. 00:14Firearm Compatibility (PSA Dagger, Glock MOS)
  3. 00:42Optic Installation Steps
  4. 00:45Screw Selection (Short vs. Long)
  5. 01:09Torqueing the Screws (10-15 in-lbs)
  6. 01:24Key Mounting Considerations (Footprint, Screws)
  7. 01:49Outro & Resource Mention

Frequently Asked Questions

What is the recommended torque setting for installing a Holosun 507 COMP optic?

For a secure and proper installation of the Holosun 507 COMP, it is recommended to torque the mounting screws between 13 to 15 inch-pounds (in-lbs). The video also suggests starting at 10 in-lbs before reaching the final torque.

What firearm footprint is required for the Holosun 507 COMP?

The Holosun 507 COMP is designed to fit slides cut for the RMR footprint. This is a common standard for many pistol optics, ensuring compatibility with a wide range of firearms like the PSA Dagger, Glock, and Springfield pistols.

Does the Holosun 507 COMP come with different screw options?

Yes, the Holosun 507 COMP includes both shorter and longer mounting screws. The appropriate screw length is crucial for a secure fit, and the video demonstrates using the shorter screws for a Palmetto State Armory Dagger installation.

Can I install the Holosun 507 COMP on a Glock MOS slide?

Direct installation on a Glock MOS slide may not be possible without an adapter plate. The Holosun 507 COMP is best suited for slides with a direct RMR footprint cut. Glock MOS systems often require specific plates to interface with RMR-pattern optics.

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