AR-15 - How To Pin Your Gas Block

Published on December 21, 2015
Duration: 7:06

This guide details the process of pinning an AR-15 gas block using the BRD Engineering Gas Block Pinning Jig. Expert instruction from Jake Carlson covers the necessary tools, drilling techniques, taper reaming, and final pin installation. The video emphasizes precision and the manageability of the task with basic tools for DIY gunsmiths.

Quick Summary

Pinning an AR-15 gas block involves precise alignment and drilling. Use the BRD Engineering Gas Block Pinning Jig, a #31 drill bit, and a 2/0 taper reamer. After drilling through the gas block and barrel, ream the hole to match the taper pin's shape, then drive the pin in with a brass punch and hammer for a secure installation.

Chapters

  1. 00:00Introduction to BRD Engineering Jig
  2. 00:44Tools and Process Overview
  3. 02:31Drilling the Gas Block
  4. 04:32Taper Reaming
  5. 06:07Final Pinning and Conclusion

Frequently Asked Questions

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

You will need the BRD Engineering Gas Block Pinning Jig, a #31 drill bit, a 2/0 taper reamer, a brass punch, a hammer, a bench vise, a hand drill, and cutting oil (CLP). Proper alignment is crucial before starting.

How do you ensure the gas block is correctly aligned before pinning?

The video emphasizes using a jig like the BRD Engineering model to hold the gas block and barrel securely in alignment. The gas block should also be properly centered and dimpled on the barrel prior to drilling.

What is the purpose of taper reaming the gas block pin hole?

Taper reaming creates a precise conical hole that matches the shape of the taper pin. This ensures a snug, permanent fit that securely fastens the gas block to the barrel, preventing movement and maintaining alignment.

Can a beginner perform gas block pinning?

While it requires precision and specific tools, the instructor indicates the process is manageable for DIY enthusiasts with basic tools like a hand drill. Following the steps carefully and using the correct jig is key to success.

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