Otter Creek Labs Polonium K

The Polonium-K is made to be a quiet, duty-rated, hard-use, 5.56 suppressor. Just as much at home on a MK18 getting hammered with heavy strings of fire as it is on a DMR/SPR setup where ultimate suppression is the goal. The unique look comes from external weight reduction, removing all unnecessary material to keep the weight down but still as strong as possible – this results in a suppressor that has 10% more surface area and a lower weight that sheds heat faster and cools down quicker. The Polonium-K features two fewer baffle than the full-size Polonium, while still maintaining excellent at ear suppression.

The polonium uses a 6mm bore that is compatible with any 6mm/.243 cartridges.

The highly effective built-in internal and external flash hider offer superior flash and signature reduction over the competition when using night vision.

The Polonium features industry standard universal 1.375×24 rear threads so you can pick what mounting system best fits your needs.

Made from H900 heat treated 17-4 stainless steel and constructed as a tubeless design the specs are as followed:

• OD: 1.625”
• 137 dB on 11.5” 5.56 SBR with BK 2209

Barrel length and firing schedule restrictions

• 10.3” – 5.56/223
• 11.5” – 6 ARC
• 14.5” – 6 Creedmoor, 6 dasher, 243 Winchester and other 6mm cartridges.
• Full auto rated – no BS. Responsible belt fed rated on 16″ 5.56mm belt fed machine guns.
• Lifetime warranty

What’s included in the box?

• Suppressor
• Stickers
• Instruction and specs pamphlet
• 1/2×28 direct thread adapter
• Tube clamp for installing mounts

For self-pickup, please make sure you purchase an NFA tax stamp before checkout to expedite the process.

Shipping to your FFL: Put the name and if you have contact info in the order notes