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SHOP NOWThis video examines the US Palm Storm CAT4 rifle paired with the EOS 5.56 suppressor in practical range use. The hosts review its ambidextrous controls, upgraded components, suppressor design, and training performance.
The hosts introduce the video at Take Aim Training Range and explain that the focus is the US Palm Storm CAT4 rifle paired with the EOS 5.56 suppressor. They note that the session is an opportunity to get meaningful range time on this specific AR-15 setup. The rifle is referred to as the US Palm Storm CAT4, and the suppressor as the EOS 5.56, setting the stage for a discussion of how the combination performs and what stands out in terms of design and function during live fire.
Initial impressions center on the Storm CAT4’s construction and controls. The upper and handguard use a semi-monolithic style lockup that feels solid and well-fitted. The rifle is fully ambidextrous, with controls laid out for both left- and right-handed shooters, something the hosts emphasize as a major positive. The flared magazine well makes reloads smoother and more intuitive. Overall fit and finish are described as very solid, giving the impression of a thoughtfully assembled AR-15 that feels upgraded out of the box rather than a basic entry-level configuration.
The discussion moves to the Storm CAT4’s rail and how it handles heat. The handguard is slim enough to allow a full hand wrap, which improves control and ergonomics. However, the closer the rail sits to the gas block, the hotter it becomes during extended firing, which the hosts describe as an unavoidable tradeoff. They suggest using gloves or adding a heat wrap to the handguard to mitigate this, noting that heat wraps on similar rifles have worked well for them. The emphasis is on balancing a compact, controllable rail profile with realistic expectations about heat buildup during sustained shooting.
The Storm CAT4 is described as a 16-inch, 5.56-chambered AR-15 that arrives already configured with many upgrades shooters typically add later. It is fully ambidextrous, including the CAT4 charging handle and safety selector. The charging handle is designed to help reduce gas blowback to the shooter’s face when running a suppressor. A Hyperfire trigger is installed from the factory, giving a more refined trigger pull than standard mil-spec units. The hosts characterize the rifle as a straightforward direct-impingement design that incorporates the upgrades many users want, without unnecessary extras, resulting in a fully fleshed-out rifle straight from the box.
Attention shifts to the EOS 5.56 suppressor. One host initially compares it to a K-length can but then clarifies that it is effectively a full-size suppressor without an integrated locking system. It uses an open hub pattern, allowing the user to add various mounting systems such as SureFire devices, KeyMo or Key-Micro, Plan B, Griffin, or ASR, which will increase overall length. In its current configuration it is set up as a direct-thread can. The suppressor is 3D printed, taking advantage of modern manufacturing to achieve complex internal geometry. It is described as a reduced back-pressure design, intended to lessen gas blowback while still being suitable for hard use.
The hosts address concerns some viewers may have about newer suppressor offerings by explaining that the EOS 5.56 is manufactured by B&T USA, not by US Palm directly. US Palm partnered with B&T USA to create a suppressor that complements the Storm CAT4 rifle while leveraging B&T’s established suppressor experience. The rifle itself reportedly incorporates 16 new patents and aims to bring a distinct feature set to the AR-15 market. The EOS line is not limited to 5.56; there is also a .30 caliber version, and additional variants, including titanium models, are in development. The can is described as a hard-use suppressor, with on-screen material details referenced in the original video.
The conversation shifts to a recent training course with Clint Smith, now teaching at a new facility in Wyoming. Members of the team, along with personnel from US Palm, used the Storm CAT4 and EOS suppressor during the course. They ran various drills and used the class to test the rifle and suppressor combination under instruction and higher round counts. The hosts describe the experience as information-dense, noting that they plan to rewatch the forthcoming training videos to absorb more of Clint Smith’s material. The rifle is portrayed as performing well in this environment, reinforcing their impressions from the range session featured in the video.
In closing, the hosts mention that a separate video covers the Storm CAT4 in more detail and briefly reference a code word segment tied to another platform. They reiterate that the CAT4 is a well-functioning AR-15 that covers the needs of most users while including features like the Hyperfire trigger and reinforced cam pathways. They speculate about future US Palm projects, such as a .308 or AR-10 variant, or possibly a more affordable or even more feature-rich model. They note that US Palm has experienced engineers from other companies and suggest that additional innovations may be forthcoming, then wrap up with appreciation for viewers and customers.
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