Unboxing the SIG MPX Copperhead – The Ultimate Compact PCC ?

Published on April 27, 2025
Duration: 7:48

This video provides an unboxing and initial impressions of the SIG MPX Copperhead, a highly compact Pistol Caliber Carbine (PCC). The presenter highlights its extremely small size, ambidextrous controls, and the recent availability of braces. Key specifications like barrel length, overall dimensions, and weight are discussed, along with a comparison to the SIG MPX K and the Flux brace system. The primary drawback identified is the non-threaded barrel, though aftermarket solutions are mentioned.

Quick Summary

The SIG MPX Copperhead is an extremely compact Pistol Caliber Carbine (PCC) with a 3.5-inch barrel and an overall length of 11.9 inches. It features fully ambidextrous controls and a gas system for soft shooting. Its main drawback is the non-threaded barrel, though aftermarket solutions exist. It's compared favorably to other compact PDWs like the P320 Flux for its handling and shooting characteristics.

Chapters

  1. 00:00Introduction & Unboxing
  2. 00:39MPX Copperhead Overview
  3. 01:39What is the Copperhead?
  4. 01:51Key Differences & Cons
  5. 02:19Romeo 5 Red Dot
  6. 02:34Lower Receiver Design
  7. 02:51Detailed Specifications
  8. 03:10Ambidextrous Features
  9. 03:26Design Intent: Compact SMG
  10. 03:44Handling and Ergonomics
  11. 04:01Aftermarket Attachments
  12. 04:09Charging Handle & Bolt Release
  13. 04:23Lack of M-LOK/Picatinny Slots
  14. 04:41Shooting Impressions & Future Review
  15. 04:54Suppressor Plans
  16. 05:11Brace Inclusion
  17. 05:16Comparison to P320 Flux
  18. 06:32Flux vs. Copperhead Dimensions
  19. 07:13Gas System & Shooting Softness
  20. 07:22Respect for the Copperhead
  21. 07:34Conclusion & Call to Action

Frequently Asked Questions

What are the key specifications of the SIG MPX Copperhead?

The SIG MPX Copperhead features a 3.5-inch barrel, an overall length of 11.9 inches, a width of 2.4 inches, and a height of 8 inches. It weighs approximately 4.3 lbs and comes with a 120-round magazine.

What is the main drawback of the SIG MPX Copperhead?

The primary drawback of the SIG MPX Copperhead is its non-threaded barrel, which makes it difficult to attach a suppressor without modifications. However, aftermarket solutions and barrel exchange kits are available.

How does the SIG MPX Copperhead compare to the P320 Flux?

While the P320 Flux is dimensionally smaller, slimmer, and shorter, the MPX Copperhead has a slightly longer barrel and is preferred by the presenter for its manual of arms and gas system, which provides a softer shooting experience.

Is the SIG MPX Copperhead ambidextrous?

Yes, the SIG MPX Copperhead is fully ambidextrous. It features ambidextrous controls for the safety selector, magazine release, and bolt release, allowing for easy operation by both left and right-handed shooters.

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