AR15 Low Profile Gas Block Mounting 101

Published on October 16, 2017
Duration: 8:33

This guide, presented by Dave Timm, details the expert installation of AR-15 low-profile gas blocks. It emphasizes the superior reliability of the pinned method for duty rifles, while also covering set screw installation with barrel dimpling and high-temperature thread locker. The instruction highlights the importance of precision tools and techniques for ensuring a secure and functional gas block, crucial for rifle performance under stress.

Quick Summary

The superior method for mounting an AR15 low profile gas block on duty or defense rifles is pinning, which creates a permanent, immovable fit. For maximum reliability, combine pinning with set screws secured by high-temperature thread locker and proper torque, ensuring precise barrel dimpling for alignment.

Chapters

  1. 00:00Introduction to Gas Block Mounting
  2. 01:13Why Use Low Profile Gas Blocks?
  3. 01:40Barrel Dimpling and Set Screws
  4. 03:02Using Dimpling Jigs
  5. 04:26The Pinning Method
  6. 06:45The 'Belt and Suspenders' Approach

Frequently Asked Questions

What are the primary methods for mounting an AR15 low profile gas block?

The two primary methods are using set screws, which requires precise barrel dimpling for alignment and security, and pinning the gas block, which involves drilling through the block and barrel for a permanent taper pin connection. Both can be combined for maximum reliability.

Why is barrel dimpling important for AR15 gas blocks?

Barrel dimpling is crucial when using set screws as it provides precise alignment points, preventing the gas block from rotating or shifting under the stress of recoil or impact, ensuring consistent gas system function.

Is pinning a gas block better than using set screws?

For duty or home defense rifles, pinning is considered the superior method due to its permanent and immovable fit. However, a combination of pinning, properly torqued set screws with thread locker, offers the most robust solution.

What tools are essential for installing a low profile gas block?

Essential tools include a dimpling jig for accurate alignment, a reamer to prepare the barrel or pin holes, punches, a hammer, and a torque wrench to ensure proper fastener tightness. High-temperature thread locker is also recommended for set screws.

Related News

All News →

More Gunsmithing & DIY Videos You Might Like

More from UN12 Magazine

View all →