Otter Creek Labs Polonium 5.56 Suppressor Black (PREORDER)

Otter Creek Labs Polonium 5.56 Suppressor Black (PREORDER)

: $550.00

In stock


Built for hard use, but very easy on your wallet.


*This is a PREORDER. The initial $220 is your 40% deposit to secure your order, and is NON-REFUNDABLE. The remaining balance of $330 will be due once Stockpile Defense receives the product. Current ETA is early August 2022.


The Otter Creek Labs 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 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.



  • H900 Heat Treated 17-4 Stainless Steel
  • Tubless Design
  • 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.


What’s included in the box?

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



Otter Creek Labs discourages 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.


Additional information

Weight 1.25 lbs
Dimensions 10 × 5 × 5 in


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