AR-15 - How To Line Up A Gas Block

Published on June 4, 2014
Duration: 1:45

This video demonstrates a precise method for aligning a low-profile gas block on an AR-15 barrel. It emphasizes marking both the barrel and the gas block with a pencil to ensure perfect centering over the gas port. The technique accounts for the slightly larger gas block hole, providing a margin for error while ensuring optimal gas flow for reliable function.

Quick Summary

The best way to align an AR-15 gas block is by marking the center of its gas tube hole and the barrel's gas port with a pencil. Align these marks when installing the block to ensure proper gas flow and reliable rifle function.

Chapters

  1. 00:00Introduction: Gas Block Alignment Importance
  2. 00:14Step 1: Marking the Gas Block
  3. 00:37Step 2: Marking the Barrel
  4. 01:01Step 3: Alignment and Installation
  5. 01:18Final Tips: Tolerance Explained

Frequently Asked Questions

What is the best way to align an AR-15 gas block?

The most effective DIY method involves marking the center of the gas block's gas tube hole and the center of the barrel's gas port with a pencil. Then, align these marks when sliding the gas block onto the barrel before tightening.

Why is gas block alignment important on an AR-15?

Proper alignment ensures the gas block's hole is perfectly centered over the barrel's gas port. This is critical for correct gas flow, which directly impacts the rifle's cycling reliability and overall function.

Can I install an AR-15 gas block without perfect alignment?

While the gas block hole is slightly larger than the barrel port, offering some tolerance, significant misalignment can disrupt gas flow. It's best to use a precise alignment method like pencil marking for optimal performance.

What tools are needed to align an AR-15 gas block?

For this method, you primarily need a pencil and a straight edge, such as a business card or ruler. Ensure the gas block and barrel are clean before proceeding with the alignment and installation.

Related News

All News →

More Gunsmithing & DIY Videos You Might Like

More from nsz85

View all →