Tech Tip: Gas System Alignment

Published on December 15, 2014
Duration: 3:03

This guide details the proper use of HB Industries Gas Block Alignment Pins for AR-15 builds, a critical step to prevent cycling issues caused by misalignment. The process involves selecting the correct pin, installing the gas block, and then using a cleaning rod to break and remove the pin, ensuring perfect indexing. A professional, instructional tone from Brownells emphasizes the importance of this low-tech solution for reliable firearm function.

Quick Summary

Misalignment between the AR-15's barrel gas port and gas block is a primary cause of cycling issues. HB Industries gas block alignment pins offer a low-tech solution for perfect indexing, ensuring reliable firearm function. The process involves inserting the pin, sliding on the gas block, and then breaking the pin with a cleaning rod.

Chapters

  1. 00:00Introduction to Gas System Alignment
  2. 00:34Using Alignment Pins
  3. 01:20Removing the Pin
  4. 01:55Alternative Alignment Method

Frequently Asked Questions

What is the most common failure in AR builds related to the gas system?

The most common failure in AR builds is cycling issues. These are often caused by misalignment between the barrel gas port and the gas block, preventing the rifle from functioning correctly.

How do HB Industries gas block alignment pins work?

HB Industries gas block alignment pins are plastic inserts that fit into the barrel's gas port. They guide the gas block into perfect alignment before it's secured, ensuring proper gas system function.

What is the procedure for removing the alignment pin after installing the gas block?

After securing the gas block, a cleaning rod is inserted from the breech to the muzzle. This action breaks the plastic pin into two halves, which are then pushed out. It's crucial to verify both halves are removed.

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