FAL Gas System Adjustment

Published on July 22, 2019
Duration: 10:00

This guide details the expert-level process for adjusting the FAL gas system, as demonstrated by InRangeTV. Proper adjustment is crucial for reliability, especially when using surplus ammunition or preparing for competitive shooting. The procedure involves incrementally increasing gas pressure until the bolt reliably locks open on an empty magazine, then adding a margin of error for real-world conditions. This technique ensures optimal cycling performance for the FAL rifle.

Quick Summary

To properly adjust an FAL gas system for reliability, start by ensuring the rifle fails to cycle. Then, fire single rounds, incrementally increasing gas pressure by adjusting the gas nut until the bolt reliably locks open on an empty magazine. Add two extra clicks for a margin of error and test with a full magazine.

Chapters

  1. 00:00Introduction to FAL Gas System
  2. 00:22FAL Gas System Unique Adjustability
  3. 01:21Gas System Adjustment Procedure
  4. 02:40First Shot Test and Adjustment
  5. 03:00Second Shot Test and Confirmation
  6. 03:25Importance of Consistent Setting and Tracking
  7. 03:52Further Single Shot Tests
  8. 04:17Adding Margin of Error and Full Magazine Test
  9. 05:28Re-adjustment and Full Magazine Firing
  10. 06:12Final Adjustment for Reliability
  11. 06:44Issue During Final Test and Final Adjustment
  12. 08:00Conclusion: Understanding FAL Gas System Design

Frequently Asked Questions

How do you properly adjust the gas system on an FAL rifle?

To adjust an FAL gas system, start by backing off the gas nut until the rifle fails to cycle. Then, fire single rounds, incrementally increasing gas pressure (one click at a time) until the bolt reliably locks open on an empty magazine. Add two more clicks for a margin of error and test with a full magazine.

Why is the FAL gas system adjustable?

The FAL gas system is highly adjustable as a deliberate design choice by FN. This allows it to reliably function with a wide variety of ammunition types and quality levels encountered globally, a necessity for military service.

What is the recommended procedure for testing FAL gas system adjustments?

After initial single-shot tuning, always test your FAL gas system adjustment with a full 20-round magazine. This simulates real-world firing conditions and helps identify any remaining reliability issues that might not appear with single shots.

What does it mean if my FAL bolt doesn't lock open after firing?

If your FAL bolt does not lock open after firing, it indicates insufficient gas pressure. You need to increase the gas pressure by adjusting the gas nut one click at a time until the bolt reliably locks back on an empty magazine.

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