Otter Creek Labs

Otter Creek Labs Polonium | 5.56 | Direct Thread Suppressor

$532.00
SKU:
POL556
$532.00
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Description

The Otter Creek Labs Polonium is a duty-rated 5.56 and 6mm suppressor designed to deliver elite sound suppression, extreme durability, and maximum mounting versatility. Constructed from H900 heat-treated 17-4 stainless steel using a tubeless design, the Polonium is built to withstand rigorous high-volume and full-auto fire while maintaining a lightweight 13.5 oz profile.

Featuring a 6mm bore, the Polonium offers class-leading sound reduction on 5.56 NATO/.223 Rem while providing extended compatibility across cartridges like 6mm ARC, 6mm Creedmoor, and .243 Winchester. Engineered with industry-standard 1.375x24 HUB rear threads, it seamlessly integrates with virtually any popular QD system on the market or the included 1/2x28 direct-thread mount.


Key Features & Performance

  • Duty-Rated Durability: Fully welded tubeless construction made from H900 heat-treated 17-4 stainless steel for hard-use durability and full-auto rating.

  • 6mm Bore Versatility: Oversized 6mm bore provides maximum sound reduction on 5.56/.223 platforms while accommodating 6 ARC, 6 Creedmoor, and .243 Win rifles.

  • 1.375x24 HUB Mount Standard: Compatible with all popular mounting setups, including Plan-B, KeyMo, ASR, Xeno, and direct-thread adapters.

  • Enhanced Flash Suppression: Built-in internal and external flash hiders minimize visible muzzle flash for low-light and night vision shooting.

  • Heat Dissipation Design: Exterior ribbing increases surface area by 10% to speed up cooling during high rates of fire.

What's in the Box?

  • Otter Creek Labs Polonium 5.56 Suppressor

  • 1/2x28 Direct Thread Mount

  • Tube Clamp for Mount Installation

  • Owner's Manual

Specs

caliber
5.56 (6mm)
length
5.8"
diameter
1.625"
weight
13.5 oz
material
H900 Heat-Treated 17-4 Stainless Steel
finish
Black Cerakote
barrel restriction
5.56: 7.5", 6mm ARC: 10.5" , 6 Crd: 12.5"
ffl
YES