OCL - Polonium 5.56 Duty Suppressor - Black

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  • Otter Creek Labs Polonium Suppressor - Black
  • OCL - Polonium 5.56 Duty Suppressor - Black
  • Otter Creek Labs Polonium 5.56 Suppressor - Black
  • Otter Creek Labs Polonium 5.56 Suppressor - Black
  • Otter Creek Labs Polonium Suppressor - Black
Frequently bought together:


Otter Creek Labs - Polonium, 5.56 Nato / .223, Black

The polonium 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 set up 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 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:

  • Length: 5.8” (no mount)
  • Weight: 13.5 oz (no mount)
  • 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.

We do however discourage the use of pronged flash hiders such as the Deadair 3 prong and SOLGW nox on barrels shorter than 12.5 inches. Pronged flash hiders do speed up wear on ANY suppressor. This is just simply a recommendation, not a requirement – even on suppressors that aren’t ours, we still recommend this.

What’s included in the box?

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

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1 Review

  • 5
    Really - really good can

    Posted by Aaron on 24th Aug 2023

    So I know there is a lot hype (good and bad) around this can. Cans, can act very different based on the firearm. I am running this on a 12.5 and I was very surprised with how well it performed the first time I used it. I did not have a lot of gas blow back like a couple Tubers say it did. It did get really hot but that was likely because of my cadence. The price, you cannot beat for sure. Bauer had the form 3 done in a week and had it shipped to my FFL super fast. I will get a K and I will get their 30 cal. Great can for the price for 556.

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