The Otter Creek Labs Polonium-K is a compact 5.56mm machine gun rated rifle silencer that possesses extremely competitive sound signature suppression performance with many silencers on the market, while possessing higher back pressure compared to some other compact designs. Users should note that the Polonium-K is capable of shooting projectiles as large as 6mm (.243) and is also available in a full-sized version that is an inch longer.

In this review, the Polonium-K performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short barrel gas-operated rifle, which is an incredibly difficult task. How would the Otter Creek Labs Polonium-K perform on your AR15 short barrel rifle?