Otter Creek Labs Polonium Suppressor, .223 REM/5.56 NATO, Black

The Otter Creek Labs Polonium (brand part no. POL556) is a .223 REM/5.56 NATO suppressor built around a 1.375×24 thread mount and a 5.8-inch overall length. Otter Creek Labs finishes the Polonium in Black. The Polonium favors shooters who want a reliable suppressor for their .223 REM/5.56 NATO host.

Key Specifications

• Rated in .223 REM/5.56 NATO for focused sound suppression.
• Measures 5.8 inches long.
• Threaded 1.375×24 for direct-thread attachment to compatible muzzle devices.
• Finished in Black.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it's a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber is it rated for? .223 REM/5.56 NATO.

How does it mount? A 1.375×24 threaded direct-mount system, not a quick-detach mount.

Buy the Otter Creek Labs Polonium Suppressor

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Otter Creek Labs‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.