Otter Creek Labs Polonium K 5.56 Suppressor 4.8 in

The Otter Creek Labs Polonium K is a compact, duty-rated suppressor designed for 5.56 use. Its short K configuration favors reduced length and weight while providing robust thermal management through increased surface area. The unit is built from heat treated 17-4 stainless steel in a CNC welded tubeless design and incorporates internal and external flash reduction elements for reduced visual signature in low-light and night-vision environments. The Polonium K is positioned for demanding operational and precision applications where size, durability, and thermal performance matter.

Key Specifications

• The caliber is 5.56.
• The suppressor uses a 6mm bore compatible with 6mm/.243 cartridges.
• The length measures 4.8 inches.
• The outer diameter is 1.625 inches.
• The unit is constructed from 17-4 stainless steel (H900 heat treated).
• The design is a CNC welded tubeless construction.
• The package includes a 1/2×28 direct thread adapter with the suppressor.
• The model name is Polonium K.
• The suppressor is listed as full-auto rated.
• The product features internal and external flash hider elements for reduced flash signature.

Durable, compact, and engineered for sustained use, the Polonium K delivers a balanced combination of size, thermal control, and signature reduction for duty, precision, and tactical applications. Its tubeless stainless construction and integrated flash management make it a practical choice where a short, robust suppressor is required.

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