The US Palm Storm CAT4 Pistol

Published on May 14, 2026
Duration: 9:33

This video provides a detailed technical overview of the US Palm Cat 4 pistol, presented by Brennan from Classic Firearms. The review highlights its premium features, comparing it to higher-end rifles like Geissele and Daniel Defense, while positioning it at a more accessible price point. Key aspects covered include its 11.5-inch barrel, proprietary muzzle brake, unique lock-up system, M-LOK handguard, ambidextrous controls, and the Hyperfire trigger, offering insights into its construction and potential performance.

Quick Summary

The US Palm Cat 4 pistol offers premium features at a competitive price point of around $1400. Key specifications include an 11.5-inch barrel, a proprietary flash-eliminating muzzle brake, a robust lock-up system, a 7-sided M-LOK handguard, and a quality Hyperfire trigger. It also boasts ambidextrous controls for enhanced usability.

Chapters

  1. 00:04Introduction to US Palm Cat 4 Pistol
  2. 00:11Rifle vs. Pistol Differences
  3. 00:25Technical Specifications Overview
  4. 00:36Barrel Length and Muzzle Brake
  5. 01:03Overall Dimensions and Weight
  6. 01:22Premium Feel and Value Proposition
  7. 01:47Proprietary Lock-Up System
  8. 02:42Picatinny Rail and M-LOK Handguard
  9. 02:58Weight and Barrel Twist Rate
  10. 03:10Replaceable Wear Parts
  11. 03:55Beefy Upper Receiver Design
  12. 04:21Ambidextrous Controls and Slide Release
  13. 04:56Maritime Bolt Catch
  14. 05:13Ambi Safety Selector
  15. 05:25Ambidextrous Charging Handle
  16. 06:04Bolt Release Accessibility
  17. 06:28Ambi Magazine Release and Flared Magwell
  18. 06:48Hyperfire Trigger Performance
  19. 07:39Staked Castle Nuts
  20. 07:52Grip Design
  21. 08:10Adjustable Brace
  22. 08:33Final Thoughts and Future Expectations
  23. 09:14Correction: Pistol, Not Rifle
  24. 09:25Conclusion and Safety Message

Frequently Asked Questions

What are the key technical specifications of the US Palm Cat 4 pistol?

The US Palm Cat 4 pistol features an 11.5-inch barrel, a proprietary muzzle brake, a 1:7 twist rate, and a 1/2 by 28 thread pitch. It has an overall length of 29 inches collapsed and 32.3 inches extended, with a height of 7.3 inches and a width of 2.7 inches. The unloaded weight is 6 lbs.

How does the US Palm Cat 4 pistol aim to provide a premium feel at its price point?

US Palm positions the Cat 4 pistol as a premium firearm by incorporating features typically found on higher-end rifles, such as a unique lock-up system, ambidextrous controls, a quality Hyperfire trigger, and a well-designed M-LOK handguard, all offered at a price around $1400, undercutting competitors like Geissele or Daniel Defense.

What are the notable features of the US Palm Cat 4's lock-up system?

The Cat 4 utilizes a proprietary lock-up system designed to be nearly monolithic. It employs two screws and two tabs that engage with the upper receiver to create a solid connection, aiming to minimize movement and enhance rigidity, similar to high-end rifle designs.

Does the US Palm Cat 4 pistol have ambidextrous controls?

Yes, the US Palm Cat 4 pistol is equipped with several ambidextrous controls. This includes an ambidextrous slide release, a 45-degree ambidextrous safety selector, and an ambidextrous magazine release, making it user-friendly for both left and right-handed shooters.

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