The US Palm EOS-556 Suppressor (Model SU0021011-N) is a high-performance 5.56mm sound suppressor designed to deliver excellent sound reduction, durability, and mounting versatility. Featuring both 1/2x28 direct thread mounting and full HUB compatibility, this suppressor offers shooters the flexibility to use it across a wide range of 5.56mm firearms, including AR-15 rifles, SBRs, and pistol-caliber carbines. Finished in a durable black coating, the EOS-556 is built for serious users who demand reliable performance for tactical, competitive, and recreational shooting applications.
US Palm EOS-556 Series
The EOS-556 is part of US Palm’s expanding line of premium suppressors engineered for modern shooters. Designed specifically for 5.56mm platforms, the EOS-556 combines advanced internal baffle technology with practical mounting options. Its dual mounting system makes it one of the most versatile 5.56mm suppressors available, allowing users to quickly adapt it to different host firearms without the need for multiple dedicated suppressors.
The US Palm EOS-556 Suppressor delivers premium sound reduction and mounting flexibility for 5.56mm firearms with 1/2x28 direct thread and HUB compatibility.
Direct Thread & HUB Compatible Mounting
One of the standout features of the US Palm EOS-556 is its versatile mounting system. It supports direct thread mounting on standard 1/2x28 threaded barrels, providing a secure and lightweight connection. Additionally, the suppressor is fully HUB (Hybrid Universal Base) compatible, allowing it to be used with a wide variety of aftermarket quick-detach mounting systems. This dual mounting capability gives shooters maximum flexibility when switching between different 5.56mm host firearms or mounting preferences.
5.56mm Optimized Performance
The EOS-556 is specifically engineered for 5.56mm NATO and .223 Remington firearms. It effectively reduces muzzle blast, recoil, and visible flash, significantly improving shooter comfort and situational awareness. Whether used on an AR-15, short-barreled rifle, or pistol-caliber carbine, the EOS-556 provides consistent and reliable sound suppression across a wide range of 5.56mm platforms.
Durable Black Finish
The US Palm EOS-556 is finished in a tough black coating that provides excellent resistance to corrosion, abrasion, and high temperatures. This finish helps protect the suppressor during extended use and harsh environmental conditions while maintaining a low-visibility tactical appearance. The black finish also helps reduce glare, making it suitable for both daytime and low-light operations.
Key Features of the US Palm EOS-556 Suppressor
- 5.56mm NATO Optimized – Designed specifically for AR-15 and 5.56 platforms
- 1/2x28 Direct Thread Mounting – Secure and lightweight attachment
- HUB Compatible – Works with a wide range of aftermarket mounts
- Black Finish – Durable and corrosion-resistant coating
- High-Temperature Construction – Built for sustained fire
- Model SU0021011-N – Official US Palm part number
- UPC 787450990913 – Authentic US Palm product
Why Choose the US Palm EOS-556 Suppressor?
The US Palm EOS-556 Suppressor offers an excellent combination of performance, versatility, and value in the 5.56mm suppressor category. Its dual mounting options (1/2x28 direct thread and HUB compatible) make it highly adaptable for shooters who own multiple 5.56mm firearms. The robust construction and high-temperature materials ensure reliable operation even during extended shooting sessions. Whether you’re looking to reduce recoil, minimize muzzle signature, or enhance your shooting experience on an AR-15 or SBR, the EOS-556 delivers professional-grade performance at a competitive price point.
Technical Specifications
| Brand | US Palm |
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| Model | EOS-556 |
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| Part Number | SU0021011-N |
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| Caliber | 5.56mm NATO / .223 Remington |
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| Mounting | 1/2x28 Direct Thread / HUB Compatible |
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| Finish | Black |
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| Material | Stainless Steel |
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| Action | Suppressor |
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| UPC | 787450990913 |
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Ideal Applications
The US Palm EOS-556 Suppressor is well-suited for AR-15 owners, SBR builders, competitive shooters, and tactical professionals. Its versatile mounting options make it easy to use across multiple 5.56mm platforms, while the durable black finish ensures long-term reliability. The suppressor is an excellent choice for shooters looking to reduce noise, recoil, and muzzle flash on their 5.56mm firearms.
Experience premium sound suppression with the US Palm EOS-556. Featuring 5.56mm compatibility, 1/2x28 direct thread mounting, HUB compatibility, and a durable black finish, this Model SU0021011-N delivers exceptional performance and versatility. UPC 787450990913.
