Infinity 556k

Tame gas, reduce muzzle flash, and quiet down your short-barreled carbine or precision rifle with the Otter Creek Labs Infinity 556K Suppressor. Created by popular demand following the massive success of the Infinity 762, this compact 5.5-inch K-style silencer packs extreme durability and low-back-pressure performance into a lightweight 5.56-focused footprint. 3D-printed from advanced Haynes 282 superalloy—a material engineered to handle thermal stress and high firing schedules far beyond traditional Inconel—the Infinity 556K is built for hard-use rifles and designed to last for generations.

What truly sets the Infinity 556K apart from traditional silencers is its proprietary tunable end cap system. Shipping factory-equipped with a medium back pressure end cap, it delivers an ideal balance of reduced blowback, signature suppression, and sound performance right out of the box. For shooters running hyper-sensitive hosts, over-gassed SBRs, or bolt guns, optional low and high back pressure end caps are available separately to fine-tune gas delivery to your exact preference. Built with the industry-standard HUB (1.375x24) rear thread pattern, the Infinity 556K gives you full freedom to attach your favorite direct-thread or quick-detach mounting system.

3D-Printed Haynes 282 Superalloy Construction:
Additive-manufactured from high-temp Haynes 282 alloy, offering exceptional tensile strength, thermal resistance, and lifespan under sustained semi-automatic or rapid firing.

Tunable Interchangeable End Cap System:
Features a modular end cap interface (ships with Medium Back Pressure end cap) that allows you to easily adjust back pressure levels to optimize performance across various barrel lengths and gas systems.

Compact 5.5" K-Can Profile:
Delivers effective flash mitigation and noise suppression in a compact 5.5-inch length and 14.5-ounce profile that keeps your rifle maneuverable in close quarters.

5.56 NATO & 6mm Caliber Rating:
Engineered for maximum utility across 5.56 NATO and 6mm rifle cartridges, making it an excellent host for AR-15s, AK platforms, and bolt-action rifles alike.