Otter Creek Labs Polonium 5.56 Suppressor – Full-Size Duty-Rated HUB Compatible Rifle Silencer

Otter Creek Labs Polonium 5.56 NATO Suppressor

The Otter Creek Labs Polonium is a premium full-size 5.56 suppressor designed for shooters seeking exceptional sound suppression, rugged durability, and reliable performance under demanding conditions. Built from H900 heat-treated 17-4 stainless steel, the Polonium delivers professional-grade durability while maintaining a lightweight and efficient design.

Whether mounted on a hard-use MK18, duty rifle, SPR, DMR, or general-purpose AR-15, the Polonium was engineered to provide outstanding suppression performance without sacrificing strength or reliability. Its full-size design prioritizes sound reduction while maintaining excellent flash suppression and durability during extended firing schedules.

The suppressor's unique exterior profile removes unnecessary material while preserving structural integrity. This innovative design increases surface area by approximately 10%, helping the suppressor cool faster and shed heat more efficiently during heavy firing sessions.

Quick Overview

The Polonium is Otter Creek Labs' flagship full-size 5.56 suppressor, delivering exceptional suppression, superior flash reduction, HUB compatibility, and full-auto durability. Designed for shooters who prioritize maximum sound performance, it excels on everything from compact SBRs to long-range SPR and DMR platforms.

Maximum Suppression Performance

Designed specifically to be a quiet, duty-rated suppressor, the Polonium provides impressive sound reduction across a wide range of host firearms. Its full-size configuration offers enhanced suppression performance compared to shorter K-length suppressors, making it ideal for shooters seeking the quietest possible setup.

Built for Hard Use

Constructed from H900 heat-treated 17-4 stainless steel, the Polonium is built to withstand demanding firing schedules and professional use. Whether subjected to rapid strings of fire on a short-barreled rifle or extended precision shooting sessions on a designated marksman rifle, the Polonium is engineered for long-term reliability.

Superior Flash Reduction

The Polonium incorporates highly effective internal and external flash-hiding features that significantly reduce visible muzzle flash and shooter signature. This makes it particularly effective for low-light shooting and night vision applications where flash mitigation is critical.

Universal HUB Compatibility

Featuring the industry-standard 1.375x24 HUB mounting interface, the Polonium allows shooters to choose from a wide variety of direct-thread and quick-detach mounting systems. Included with the suppressor is a 1/2x28 direct-thread adapter and tube clamp for immediate installation.

Key Features

• Full-size suppressor optimized for maximum sound suppression
• Duty-rated hard-use construction
• H900 heat-treated 17-4 stainless steel construction
• Full-auto rated
• Superior flash reduction performance
• Enhanced cooling through increased surface area design
• Industry-standard HUB compatible mounting system
• 1.375x24 rear thread interface
• Compatible with 5.56 NATO and 6mm/.243 cartridges
• Cerakote Black finish
• Includes 1/2x28 direct thread adapter
• Includes tube clamp for mount installation
• Designed for SBR, SPR, DMR, and AR-15 platforms

Specifications

Why Choose the Polonium?

The Otter Creek Labs Polonium is designed for shooters who prioritize suppression performance without compromising durability. With exceptional sound reduction, outstanding flash suppression, full-auto durability, and universal HUB compatibility, the Polonium stands out as one of the most capable full-size 5.56 suppressors available for modern sporting rifles, duty carbines, and precision AR platforms.