Sig 556R Malfunctions

Published on March 22, 2011
Duration: 5:55

This guide details how to address common malfunctions with the Sig 556R, as demonstrated by Military Arms Channel. It covers "tap and rack" and "double feed" clearing techniques, emphasizing the importance of a function check. The guide also includes steps for field stripping to inspect critical components like the bolt face and gas piston, crucial for diagnosing persistent reliability issues. Instruction is provided by an experienced firearms instructor, highlighting practical troubleshooting for this specific rifle model.

Quick Summary

The Sig 556R can experience failures to fire and extract, with rounds getting stuck or falling off the bolt face. Clearing involves "tap and rack" drills for stovepipes/failures to extract, and locking the bolt back for double feeds. Inspecting the bolt face, gas piston, and charging handle after malfunctions is crucial for diagnosis.

Chapters

  1. 00:00Introduction & Skepticism
  2. 00:28Demonstration of Malfunctions
  3. 01:09Extraction Issues Explained
  4. 01:34Charging Handle Damage
  5. 02:31Persistent Reliability Problems
  6. 05:35Internal Components & Field Strip

Frequently Asked Questions

What are common malfunctions with the Sig 556R?

The Sig 556R commonly experiences failures to fire and failures to extract, where rounds get stuck in the action or fall off the bolt face during extraction. Stovepipes are also noted.

How can I clear a stovepipe or failure to extract on a Sig 556R?

Perform a "tap and rack" drill: firmly slap the magazine well, then sharply pull the charging handle to the rear and release it to clear the obstruction and chamber a new round.

What causes the charging handle cover on the Sig 556R to rip?

The rubber cover on the charging handle can rip if the case necks of malfunctioning rounds strike it during jams, indicating a significant issue with the extraction cycle.

What should I inspect after experiencing Sig 556R malfunctions?

After clearing malfunctions, field strip the rifle and inspect the bolt face for damage or debris, check the gas piston system for fouling, and examine the charging handle for any tears or damage.

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