Gas Buster Charging Handle DIY - No Gas in Face!

Published on December 10, 2016
Duration: 9:15

This guide details how to create a DIY 'Gas Buster' charging handle for AR-15/M4 platforms to mitigate gas blowback when shooting suppressed. The process involves applying high-heat RTV silicone to the charging handle, using shoe polish as a release agent, and allowing it to cure overnight. This modification, explained by experienced instructor Dave Timm, significantly improves the shooting experience by preventing gas from escaping into the shooter's face.

Quick Summary

A DIY Gas Buster Charging Handle modification for AR-15/M4 platforms uses high-heat RTV silicone to create a seal, preventing gas blowback when shooting suppressed. Key steps include thorough cleaning, applying a release agent (Kiwi shoe polish), applying silicone to the charging handle, and allowing it to cure overnight with spacers for compression.

Chapters

  1. 00:13Introduction to Suppressed Shooting Issues
  2. 01:04The DIY Gas Buster Concept
  3. 02:05Required Materials
  4. 02:42Preparation and Cleaning
  5. 03:51Applying Release Agent
  6. 05:16Silicone Application and Curing

Frequently Asked Questions

What is a Gas Buster Charging Handle and why is it useful?

A Gas Buster Charging Handle is a modification designed to prevent gas blowback from escaping around the charging handle when shooting a suppressed firearm. This significantly reduces eye irritation and improves the overall shooting experience by blocking unpleasant fumes and debris.

What materials are needed to make a DIY Gas Buster Charging Handle?

For this DIY project, you will need Permatex Ultra Black RTV silicone, Kiwi Neutral Shoe Polish (as a release agent), denatured alcohol for cleaning, Q-tips, rags, a small torch or lighter, and protective gloves.

How do you ensure the DIY Gas Buster Charging Handle doesn't permanently bond to the rifle?

A release agent, specifically Kiwi Neutral Shoe Polish, is applied generously to the rear surfaces of the upper receiver. This prevents the RTV silicone from adhering to the rifle itself, ensuring the charging handle remains removable after curing.

What is the curing time for the RTV silicone used in this modification?

The RTV silicone used for the DIY Gas Buster Charging Handle requires an overnight cure, approximately 12 to 24 hours, to achieve its full hardness and sealing properties before the firearm can be safely reassembled and tested.

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