Modifying Your Holster

Published on May 19, 2026
Duration: 3:00

This guide details how to modify a Kydex holster to accommodate a weapon light attachment, such as the Dark Matter Concepts CMD, using a heat gun. It covers the process of heating and reshaping the holster to ensure proper fit and retention, saving the user from purchasing a new holster.

Quick Summary

Modify your Kydex holster for weapon lights by using a heat gun for about 38 seconds, keeping it 0.5-1 inch away and moving it constantly. Focus heat on the light's position, then mold the holster around the light with the firearm inserted. Let it cool completely before re-tightening screws. This process ensures proper fit and retention.

Chapters

  1. 00:00Introduction & CMD Overview
  2. 00:08What is the Carbon Mitigation Device (CMD)?
  3. 00:14CMD Installation on X300 Light
  4. 00:27CMD Features & Benefits
  5. 00:31CMD Attachment Screws & Loctite
  6. 00:40CMD: Carbon Fouling Prevention & Light Protection
  7. 00:48Addressing Holster Fitment Issues with CMD
  8. 00:51Holster Modification Process: Using a Heat Gun
  9. 01:03Heating the Holster: Time and Technique
  10. 01:10Applying Heat: Distance and Duration
  11. 01:22Molding the Holster Around the Light
  12. 01:30Creating a Channel for the Light Bezel
  13. 01:34Cooling and Re-tightening the Holster
  14. 01:41Testing Retention After Modification
  15. 01:52Conclusion: Saving Money on Holsters

Frequently Asked Questions

How do you modify a Kydex holster to fit a weapon light?

To modify a Kydex holster for a weapon light, first loosen all its screws. Then, use a heat gun on a medium setting, keeping it 0.5-1 inch away and moving it constantly for about 38 seconds, focusing on the area where the light will sit. Once malleable, insert the firearm with the light and reshape the holster around it. Allow it to cool completely before re-tightening the screws.

What is the purpose of a Carbon Mitigation Device (CMD)?

A Carbon Mitigation Device (CMD), like the one from Dark Matter Concepts, is designed to fit over the bezel of weapon lights. Its primary purpose is to prevent carbon fouling from accumulating on the light's lens, keeping it clean and clear. It also provides an additional layer of protection to the light head itself.

What tools are needed to adjust a holster for a weapon light?

The primary tool needed for adjusting a Kydex holster to accommodate a weapon light is a heat gun. You will also need a screwdriver to loosen and re-tighten the adjustment screws on the holster. Ensure the firearm is unloaded before starting any modification process.

How long should you heat a Kydex holster for modification?

For modifying a Kydex holster, it's recommended to apply heat for approximately 38 seconds. It's crucial to keep the heat gun moving and maintain a distance of 0.5 to 1 inch from the material to avoid overheating or damaging it. The goal is to make the material pliable, not to melt it.

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