AR-15 - How To Gas Block Dimple Your Barrel

Published on December 20, 2015
Duration: 8:43

This video demonstrates how to properly dimple an AR-15 barrel for a gas block using a BRD Engineering jig. Dimpling ensures the gas block set screws have a secure seating point, preventing movement and maintaining alignment with the gas port. The process involves using a specialized jig to accurately locate and drill the dimples, crucial for reliable firearm function.

Quick Summary

Dimpling an AR-15 barrel creates secure seating points for gas block set screws, preventing movement and ensuring alignment with the gas port. Use a specialized jig like the BRD Engineering BRDEJIG2 and an 11/64 inch cobalt drill bit, drilling only to the tip's depth.

Chapters

  1. 00:00Intro: Why Dimple Your AR-15 Barrel
  2. 00:45Gas Block Alignment Principles
  3. 01:40BRD Engineering Jig Features & Model
  4. 03:08Tools Needed for Barrel Dimpling
  5. 04:30Setting Up the Dimpling Jig
  6. 06:05Drilling the Dimples: Step-by-Step
  7. 07:18Final Results & Inspection

Frequently Asked Questions

Why is it important to dimple an AR-15 barrel for a gas block?

Dimpling creates precise seating points for the gas block's set screws. This prevents the gas block from shifting or twisting due to recoil, ensuring consistent alignment with the gas port for reliable firearm function.

What tools are needed to dimple an AR-15 barrel?

You'll need a specialized dimpling jig like the BRD Engineering BRDEJIG2, an 11/64 inch drill bit (cobalt recommended), a drill, and a vise. Lubricant like CLP is also advised during drilling.

How does the BRD Engineering dimpling jig work?

The jig features a pointed, self-centering screw that engages the barrel's gas port for perfect alignment. A second screw secures the jig, allowing precise drilling of dimples through guide holes.

What is the correct depth for drilling dimples on an AR-15 barrel?

Drill only to the depth of the drill bit's tip. Over-drilling can damage the barrel. The goal is to create a recess for the set screw, not to penetrate deeply into the barrel material.

Related News

All News →

More Gunsmithing & DIY Videos You Might Like

More from nsz85

View all →