Otter Creek Labs Polonium 5.56 - Silencer 1/2X28 Fde

The Otter Creek Labs Polonium 5.56 silencer in FDE is a no-nonsense suppressor purpose-built for hard use and duty applications. Designed around a 6mm bore, it handles 5.56 NATO and is also compatible with 6mm and .243 cartridges. The Polonium delivers genuine sound reduction without marketing fluff—the track record speaks louder than any inflated dB claims. It's the kind of can that performs reliably whether you're at the range, in the field, or running duty cycles that demand durability.

Weight and balance matter on a rifle, and Otter Creek Labs engineered the Polonium with purposeful material removal: every unnecessary ounce is gone, but structural integrity stays intact. The result is a 13.5 oz suppressor with 10% more external surface area than conventional designs—that extra cooling capacity means faster heat shedding and quicker cool-down between strings. The integrated flash hider is tuned to cut muzzle flash effectively, a real advantage when running night vision or shooting low-light scenarios where that glow can compromise your position.

The Polonium uses industry-standard 1.375×24 rear threads, so you're not locked into one mounting ecosystem. The 1/2×28 direct-thread variant ships with an adapter, a tube clamp for mount swaps, and straightforward documentation—everything you need to get it running. Built from H900 heat-treated 17-4 stainless steel in a CNC-welded, tubeless design, it's engineered to eat abuse and keep functioning. FDE finish blends in naturally across most modern rifle platforms.

Whether you're after a lightweight suppressor for a 5.56 duty rifle, a general-purpose can for your AR platform, or a reliable all-rounder that won't nickel-and-dime you on features you don't need, the Polonium is a solid choice for shooters who value substance over marketing.

Key Features

• 6mm bore—compatible with 5.56 NATO, 6mm, and .243 cartridges
• Integrated flash hider for effective muzzle flash reduction
• Lightweight design with extended external surface area for superior heat dissipation
• Durable H900 heat-treated 17-4 stainless steel construction
• CNC-welded, tubeless design for reliability and strength
• Industry-standard 1.375×24 rear threads for flexible mounting options
• Includes 1/2×28 direct-thread adapter, tube clamp, and instruction pamphlet
• FDE finish

Specifications

Frequently Asked Questions

What comes in the box?

The Polonium ships with the suppressor itself, a 1/2×28 direct-thread adapter, a tube clamp for installing or changing mounts, instruction documentation, and stickers.

Is the Polonium compatible with my 5.56 rifle?

Yes. The 6mm bore is designed for 5.56 NATO and also handles 6mm and .243 cartridges. The rear threads are 1.375×24 (universal), and this model includes a 1/2×28 direct-thread adapter for standard AR-platform muzzles.

How much does the Polonium weigh?

The Polonium weighs 13.5 oz without a mount, making it a relatively lightweight option for rifle platforms where every ounce matters.

Does the Polonium reduce muzzle flash for night vision use?

Yes. The integrated internal and external flash hider is engineered to reduce muzzle flash effectively, which is beneficial when using night vision or shooting in low-light conditions.