Sig 550 - does it work with AR mags?

Published on August 8, 2024
Duration: 0:35

This video tests the magazine compatibility of the Sig 550 rifle with standard AR-15 PMAGs. The demonstration clearly shows that the Sig 550 does not natively accept AR-15 magazines, as the PMAG fails to lock into the magwell. Modifications or different lower receivers would be required for such compatibility.

Quick Summary

The Sig 550 rifle does not natively accept standard AR-15 magazines. During testing, an AR-15 pattern Magpul PMAG failed to lock into the Sig 550's magwell, indicating that modifications or a different lower receiver would be required for compatibility.

Chapters

  1. 00:00Intro: Sig 550 Rifle
  2. 00:05Loading & Firing Sig 550
  3. 00:19AR-15 Magpul PMAG Test
  4. 00:30Conclusion: Sig 550 Mag Compatibility

Frequently Asked Questions

Can a Sig 550 use AR-15 magazines?

No, the Sig 550 does not natively work with standard AR-15 magazines. During testing, an AR-15 pattern Magpul PMAG failed to lock into the Sig 550's magwell, indicating that modifications or a different lower receiver would be required for compatibility.

What type of magazines does the Sig 550 use?

The Sig 550 typically uses its own proprietary magazines, which are often translucent. The video shows the rifle functioning correctly with these standard factory magazines before testing AR-15 compatibility.

What caliber is the Sig 550 rifle?

The Sig 550 rifle, also known as the Stgw 90, is chambered in 5.56x45mm NATO. This is a common caliber for many modern rifles, including the AR-15 platform.

What modifications are needed for a Sig 550 to accept AR-15 mags?

The video suggests that specific modifications or a different lower receiver would be necessary for a Sig 550 to accept AR-15 magazines. Without these, standard AR-15 magazines will not function with the rifle.

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