Forward Control Designs Gas Tube Pin Tool & Modern Armory Gas Block Pin Jig

Published on January 29, 2020
Duration: 5:34

This guide details the use of jigs from Forward Control Designs and Modern Armory for installing and removing gas tube roll pins in low-profile AR-15 gas blocks. It covers proper punch selection, techniques to avoid damaging roll pins, and considerations for stubborn or mushroomed pins. The instructor also suggests potential modifications for enhanced functionality.

Quick Summary

Forward Control Designs and Modern Armory offer gas block pin jigs for AR-15s, ideal for removing or installing gas tube roll pins in low-profile gas blocks. They are not compatible with front sight bases or adjustable gas blocks without modification. For installation, use a roll pin starter followed by a larger punch to prevent damage.

Chapters

  1. 00:00Introduction to Gas Block Pin Jigs
  2. 00:22Jig Purpose and Limitations
  3. 00:55How to Use the Jig for Removal
  4. 01:24How to Use the Jig for Installation
  5. 01:45Avoiding Roll Pin Damage
  6. 02:21Jig Design and Anodizing Concerns
  7. 02:55Dealing with Stubborn/Mushroomed Pins
  8. 03:32Potential Jig Modifications
  9. 04:09Incompatibility with Adjustable Gas Blocks
  10. 04:39Proper Surface for Jig Use
  11. 05:15Conclusion and Recommendation

Frequently Asked Questions

What is the primary function of the Forward Control Designs and Modern Armory gas block pin jigs?

These jigs are designed to assist in the removal and installation of gas tube roll pins in AR-15 low-profile gas blocks. They provide a stable platform to hold the gas block securely while you work on the roll pin.

Can these gas block pin jigs be used with any type of AR-15 gas block?

No, these jigs are specifically for low-profile gas blocks. They will not fit front sight bases. Additionally, they are not compatible with adjustable gas blocks without modification, as the adjuster mechanism prevents the jig from laying flush.

What is the best practice for installing a gas tube roll pin using these jigs?

For installation, use a roll pin starter to initially hold the pin in place. Once started, switch to a larger, flat-faced punch to drive the pin the rest of the way. This prevents mushrooming and damage to the roll pin.

What surface should be used when operating the gas block pin jig?

It is crucial to place the jig on a solid, stable surface that does not bounce, such as a vice anvil. Using a soft or padded surface can cause the jig to move and make roll pin removal difficult.

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