Otter Creek Labs Polonium K, 5.56 NATO/.223 Remington, 6mm/.243 (6 ARC, 6mm Creedmoor, 6mm Dasher, .243 Winchester) – 1/2″x28 – Black
Original price was: $540.00.$522.00Current price is: $522.00.
Caliber: 5.56 NATO, .223 Remington, 6mm/.243 (6 ARC, 6mm Creedmoor, 6mm Dasher, .243 Winchester)
Length: 4.8 inches
Weight: 11.5 oz (without mount)
Outer diameter: 1.625 inches
Bore diameter: 6mm
Material: H900 heat-treated 17-4 stainless steel
Construction: CNC welded tubeless design
Rear thread: 1.375×24 (HUB standard)
Included: 1/2×28 direct thread adapter
Minimum barrel length: 7.5″ for 5.56/.223 and 7.62×39
Full-auto rated: Yes
Belt-fed rated: Yes, on 16″ 5.56 belt-fed machine guns. Do not exceed 300-round string without cool down.
Flash hider: Integrated internal and external
Warranty: Lifetime, no BS
Out of stock
Description
The Otter Creek Labs Polonium K is a compact, hard-use 5.56 suppressor built from H900 heat-treated 17-4 stainless steel in a CNC welded tubeless design. It is 4.8 inches long, weighs 11.5 oz without a mount, and measures 1.625 inches in outer diameter. The 6mm bore is compatible with 5.56 NATO, .223 Remington, and all 6mm/.243 cartridges including 6 ARC, 6mm Creedmoor, 6mm Dasher, and .243 Winchester. The Polonium K uses industry-standard 1.375×24 HUB rear threads and has a 7.5-inch minimum barrel length requirement for 5.56/.223. Full-auto rated and belt-fed certified with no marketing fluff attached.
Additional information
| Caliber or Gauge | 5.56 |
|---|---|
| Manufacturer | |
| Model | Polonium K |
| UPC Code |





