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Otter Creek Labs

Otter Creek Labs Polonium K Suppressor 5.56 Hub Compatible with 1/2x28 Direct Thread Mount

(1 Review)

SKU: POLK

Model: Polonium K

UPC: 664533654156

Otter Creek Labs Polonium K Suppressor 5.56 Hub Compatible with 1/2x28 Direct Thread Mount

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$539.99

$540.00

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Important: Every suppressor requires a tax stamp. This can be obtained on SilencerShop.com.

New for 2026: Tax stamps are now $0

Quantity on Hand: 16

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Free in-store pickup at Blue Ash, OH

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Product Details

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 is made in both standard and K configuration. While the K version is slightly louder it is also: lighter, shorter and lower back pressure. 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 1.375x24 rear threads so you can pick what mounting system best fits your needs.

Length: 4.8", Weight: 11.5 oz, OD: 1.625"
Made from H900 heat treated 17-4 stainless steel
Includes: Instruction and specs pamphlet, 1/2x28 direct thread adapter & Tube clamp for installing mounts
Cerakote Finish, Black

Specifications

Manufacturer	Otter Creek Labs
Model	Polonium K
UPC	664533654156
SKU	POLK
Width	2.7500
Length	5.7500
Height	2.7500
Weight	1.0600
Product Rebate	Important: Every suppressor requires a tax stamp. This can be obtained on SilencerShop.com. New for 2026: Tax stamps are now $0

Questions & Answers

1 question answered for this product.

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07/18/2025 by Curtis J

Is this model user serviceable?? That's important info. Thank you!

07/21/2025 by Range USA Staff

No, the Otter Creek Labs Polonium K suppressor is not user serviceable. It is a sealed, welded unit designed for durability and performance, particularly for high rates of fire and short-barrel setups. Since it’s not intended to be taken apart by the end user, cleaning is generally limited to standard suppressor maintenance like soaking or using ultrasonic cleaners if needed.

Customer Reviews

5 out of 5

1 total review for this product

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01/16/2026

Reviewer has purchased this product.

Noah F.

Great Can

What an awesome suppressor, makes shooting the rifle extremely pleasant!

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