The Otter Creek Labs Polonium-30 expands the proven Polonium suppressor family with broad multi-caliber compatibility ranging from 5.56 NATO through .300 Norma Magnum. Designed for shooters who need one durable suppressor for multiple rifle platforms, the Polonium-30 balances compact dimensions, dependable sound reduction, and rugged construction for demanding range, hunting, and professional applications.
Measuring just 5.8 inches long and weighing 13.5 ounces, the Polonium-30 keeps added length and front-end weight manageable. Its 17-4 stainless steel construction is engineered to withstand hard use and high-volume firing schedules, while the ribbed exterior profile increases surface area to support more efficient heat dissipation.
The suppressor uses the industry-standard 1.375x24 HUB mounting interface, giving owners the flexibility to choose from a wide variety of compatible direct-thread and quick-detach mounting systems. A 5/8x24 direct-thread adapter is included, allowing the suppressor to be installed on many common .30-caliber rifle barrels right out of the box.
A flash-reducing end cap helps limit visible muzzle flash during low-light shooting, while the full-auto rating makes the Polonium-30 well suited for demanding semiautomatic and select-fire platforms when used within the manufacturer's barrel-length and firing restrictions.
| 5.56 NATO / .223 Remington | 7.5" Minimum Barrel |
| 7.62x39mm | 7.5" Minimum Barrel |
| 6mm ARC | 10.5" Minimum Barrel |
| 6.5 Grendel | 10.5" Minimum Barrel |
| .308 Winchester | 12.5" Minimum Barrel |
| 6.5 Creedmoor | 12.5" Minimum Barrel |
| 6mm Creedmoor | 12.5" Minimum Barrel |
| .243 Winchester | 12.5" Minimum Barrel |
| .300 Winchester Magnum | 16" Minimum Barrel |
| 7mm Remington Magnum | 16" Minimum Barrel |
| .300 PRC | 16" Minimum Barrel |
| .300 RUM | 18" Minimum Barrel |
| .300 Norma Magnum | 18" Minimum Barrel |
| Manufacturer | Otter Creek Labs |
| Model | Polonium-30 |
| Type | Multi-Caliber Rifle Suppressor |
| Caliber Compatibility | 5.56 NATO through .300 Norma Magnum |
| Material | 17-4 Stainless Steel |
| Finish | Black Cerakote |
| Length | 5.8" |
| Diameter | 1.625" |
| Weight | 13.5 oz |
| Mounting Interface | 1.375x24 HUB Compatible |
| Included Mount | 5/8x24 Direct-Thread Adapter |
| Full-Auto Rated | Yes |
| End Cap | Flash Reducing |
The Polonium-30 is an excellent choice for shooters who want one compact suppressor that can move between a wide range of rifle platforms. Its HUB-compatible mounting system, durable stainless steel construction, full-auto rating, and generous caliber range make it equally useful on short-barreled ARs, general-purpose carbines, hunting rifles, and magnum bolt guns. For shooters seeking versatility without excessive size or weight, the Polonium-30 offers a practical combination of durability, flexibility, and performance.
Always follow the manufacturer's caliber, barrel-length, mounting, and firing-schedule requirements.
Otter Creek Labs
Otter Creek Labs
Otter Creek Labs