Sig P320 PCC with Matador Arms Mag X P320 Range Test

Published on May 22, 2019
Duration: 8:13

This video tests the Matador Arms Mag X P320 adapter, allowing Sig P320 magazines to be used in an AR-15 lower with a 9mm upper. The adapter performed flawlessly across a wide range of ammunition weights (90-158 grains) in terms of feeding. While last-round bolt hold-open was not consistently achieved, the adapter is presented as a viable solution for training or cost-effective shooting.

Quick Summary

The Matador Arms Mag X P320 adapter allows Sig P320 magazines to be used in an AR-15 lower receiver for 9mm PCC builds. It performed flawlessly feeding a wide range of 9mm ammunition (90-158 grains) but may require buffer/spring adjustments and doesn't consistently lock open on the last round.

Chapters

  1. 00:00Introduction to Matador Arms Mag X P320 Adapter
  2. 00:11Requirements for 9mm PCC Build
  3. 00:24Use Cases: Training & Cost Savings
  4. 00:35Test Platform: ARP7 Lower & PWS Upper
  5. 00:44Full Mag Plus One Test
  6. 00:50Mag Release Operation
  7. 00:58Accuracy Dependency on Upper
  8. 01:16Buffer/Spring Considerations
  9. 01:47Last Round Bolt Hold Open Observation
  10. 02:05Feeding Mechanism Explained
  11. 02:15Ammunition Weight Range Tested
  12. 02:39Testing Heaviest to Lightest Ammo
  13. 02:53PPU Subsonic 158gr Test
  14. 03:19Remington Ultimate Defense 147gr Test
  15. 03:40Remington UMC 124gr FMJ Test
  16. 03:56115gr FMJ Steel Case Test
  17. 04:14115gr FMJ Aluminum Case Test
  18. 04:29GBW Legend Pro 115gr JHP Test
  19. 04:52MHP 108gr Test
  20. 04:59Potential Feeding Issues with Light Ammo
  21. 05:16Honor Defense 100gr Frangible HP Test
  22. 05:33Snag Tag 95gr Soft Point Test
  23. 05:51Winchester Super Clean 90gr Test
  24. 06:10Overall Review and Conclusion
  25. 06:13Innovative Invention by Matador Arms
  26. 06:22Flawless Ammo Feeding
  27. 06:49Benefits of Keeping AR-15 Lower
  28. 07:06Sig P320 Magazine Cost
  29. 07:13Mag Well Flare for Insertion
  30. 07:21Ease of Magazine Ejection
  31. 07:30Last Round Bolt Hold Open Discussion
  32. 07:46Cool Solution for 9mm PCC

Frequently Asked Questions

What is the Matador Arms Mag X P320 adapter?

The Matador Arms Mag X P320 is an adapter designed to allow the use of Sig Sauer P320 magazines in an AR-15 lower receiver. This enables shooters to build a 9mm Pistol Caliber Carbine (PCC) using their existing AR-15 lower and controls, paired with a dedicated 9mm AR upper.

What are the benefits of using the Matador Arms Mag X P320 adapter?

This adapter is beneficial for training in locations that prohibit rifles, for more economical shooting with 9mm ammunition, and for maintaining familiar AR-15 lower receiver ergonomics and trigger controls. It allows users to leverage their Sig P320 magazines for a PCC build.

Does the Matador Arms Mag X P320 adapter work with all 9mm ammunition?

During testing, the Matador Arms Mag X P320 adapter demonstrated flawless feeding with a wide range of 9mm ammunition, from 90-grain to 158-grain projectiles. This suggests good compatibility with various bullet weights and types for reliable cycling.

Are there any potential issues with the Matador Arms Mag X P320 adapter?

One observation during testing was the inconsistent achievement of last-round bolt hold-open. Additionally, Matador Arms advises that the buffer and spring in the AR-15 lower may require adjustment or replacement for optimal performance, especially when loading a full magazine plus one.

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