Save up to $50 on your online order today!
ID 1983676 | MPN POLK
Otter Creek Labs
Otter Creek Labs Polonium-K 5.56mm NATO 1.375 x 24 Suppressor with 1/2 x 28 Direct Thread Adapter - Black Cerakote
$522.00
Otter Creek Labs Polonium-K 5.56mm NATO 1.375 x 24 Suppressor with 1/2 x 28 Direct Thread Adapter - Black Cerakote - The Polonium was designed from the ground up to be a quiet, duty-rated, hard-use 5.56mm NATO suppressor that thrives under abuse. Available in both Standard and K configurations, it delivers one of the best size-to-weight-to-sound performance ratios on the market — period. If you want a suppressor you can run hard without worrying about babying it, the Polonium series is your answer. No gimmicks. No inflated or cherry-picked dB numbers. No marketing smoke and mirrors. The performance, durability, and real-world track record of the Polonium and Polonium-K speak for themselves. The precision 6mm bore isn’t just optimized for 5.56 — it’s fully compatible with 6mm / .243 cartridges, giving you greater versatility without sacrificing performance. An integrated internal and external flash hider system provides exceptional flash reduction — especially critical when running night vision or shooting in low-light conditions. When visibility matters most, the Polonium keeps your signature to a minimum. Its distinctive appearance isn’t cosmetic — it’s functional. Strategic external material reduction removes unnecessary mass while preserving structural integrity. The result? A suppressor that’s lighter, just as strong, and features up to 10% more surface area (depending on length) to dissipate heat faster and cool down quicker between strings of fire. Run it hard. Let it cool faster. Get back to work. Both the Polonium and Polonium-K feature industry-standard 1.375 x 24 Rear Threads, giving you the freedom to choose the mounting system that fits your setup. No proprietary lock-ins. No limitations. Just compatibility and flexibility. If you want a suppressor that delivers elite performance without inflated hype — and can handle real-world abuse — the Polonium series is built for you.
Added to Your Cart
It is the customer's responsibility to follow all Federal, State, and Local Laws.
All firearms MUST be picked up by the BUYER (ACTUAL PURCHASER) at your selected Sportsman's Warehouse store or chosen Independent Firearm Dealer (“FFL”).
A valid U.S. and/or state government-issued identification document, or combination of government-issued documents, which reflect the buyer's current residential address, must be presented at the selected store location prior to the completion of any firearm-related paperwork and background check initiation.
The actual purchaser must be 18 years of age or older to purchase rifles and/or shotguns.
The actual purchaser must be 21 years of age or older to purchase handguns and/or firearm receivers, frames, silencers, or pistol-grip only firearms.
Certain states have stricter laws regarding a firearm buyer’s age and Sportsman's Warehouse complies with such requirements.
Advertised prices may display strikethrough or regular pricing. Strikethrough pricing on sale items represents: 1) the manufacturer’s Minimum Advertised Price (MAP), 2) the Manufacturer’s Suggested Retail Price (MSRP), or 3) a price at which the product was offered within the last 90 days.
Strikethrough pricing on clearance products represents the last regular price the product was offered at before being classified as clearance (not intended to return to our product portfolio in the foreseeable future). A discounted price will remain on clearance products until the product is sold out or otherwise liquidated.
Strikethrough pricing on clearance products represents the last regular price the product was offered at before being classified as clearance (not intended to return to our product portfolio in the foreseeable future). A discounted price will remain on clearance products until the product is sold out or otherwise liquidated.
1983676
Otter Creek Labs Polonium-K 5.56mm NATO 1.375 x 24 Suppressor with 1/2 x 28 Direct Thread Adapter - Black Cerakote
by Otter Creek Labs
$522.00
Overview
Silencer orders are fulfilled by one of our trusted partners, who will contact you to guide you through every step of the process. Please note that order cancellations may be subject to a fee. For full details on returns, warranties, and order policies, visit our Silencer T’s & C’s and FAQ pages
Otter Creek Labs Polonium-K 5.56mm NATO 1.375 x 24 Suppressor with 1/2 x 28 Direct Thread Adapter - Black Cerakote - The Polonium was designed from the ground up to be a quiet, duty-rated, hard-use 5.56mm NATO suppressor that thrives under abuse. Available in both Standard and K configurations, it delivers one of the best size-to-weight-to-sound performance ratios on the market — period.
If you want a suppressor you can run hard without worrying about babying it, the Polonium series is your answer.
No gimmicks. No inflated or cherry-picked dB numbers. No marketing smoke and mirrors. The performance, durability, and real-world track record of the Polonium and Polonium-K speak for themselves.
The precision 6mm bore isn’t just optimized for 5.56 — it’s fully compatible with 6mm / .243 cartridges, giving you greater versatility without sacrificing performance.
An integrated internal and external flash hider system provides exceptional flash reduction — especially critical when running night vision or shooting in low-light conditions. When visibility matters most, the Polonium keeps your signature to a minimum.
Its distinctive appearance isn’t cosmetic — it’s functional. Strategic external material reduction removes unnecessary mass while preserving structural integrity.
The result?
A suppressor that’s lighter, just as strong, and features up to 10% more surface area (depending on length) to dissipate heat faster and cool down quicker between strings of fire.
Run it hard. Let it cool faster. Get back to work.
Both the Polonium and Polonium-K feature industry-standard 1.375 x 24 Rear Threads, giving you the freedom to choose the mounting system that fits your setup. No proprietary lock-ins. No limitations. Just compatibility and flexibility.
If you want a suppressor that delivers elite performance without inflated hype — and can handle real-world abuse — the Polonium series is built for you.
- 1/2 x 28 Direct Thread Adapter
- 1.375 x 24 Suppressor Thread Pitch
After you place your order, you will be contacted by one of our fulfillment partners with additional info about next steps.
A $10 Paperwork Processing fee will be charged for each suppressor.
Purchases, cancellations, returns, and warranty claims for silencers/suppressors are subject to our Silencer Terms and Conditions.
All silencer sales are final. Once a silencer is transferred to you, it cannot be returned. See our Silencer Terms and Conditions for warranty details.
Please review our frequently asked questions (FAQs) and answers about silencers. Click here to review.
Specifications
| Finish | Black Cerakote |
|---|---|
| Model | Polonium |
| Caliber | 5.56mm NATO |
| Cartridge |
5.56mm NATO 223 Remington |
| Diameter | 1.625in |
| Fits | Rifle |
| Length | 4.8in |
| Material | 17-4 Stainless Steel |
| Mount Style | Direct Thread Adapter |
| Thread Pitch | 1/2 x 28 |
| Type | Suppressor |
| Weight | 11.5oz |
Reviews
Notify Me When In Stock
You are tracking this product.
You have removed this product alert
Thank You,
An error occurred processing your request. Please try again later.
Please enter a valid email
CUSTOMER GALLERY