The Otter Creek Labs Infinity 556K is a compact, lightweight 5.56mm suppressor built from Haynes 282 — a superalloy that outperforms Inconel at high temperatures — with an adjustable end cap system that lets you tune back pressure for any platform, from bolt guns to over-gassed ARs.
NFA Item — Federal $0 Tax Stamp — No Stamp Fee. This suppressor is a National Firearms Act (NFA) regulated item. Transfer requires completion of ATF Form 4, a $0 tax stamp, and dealer-to-dealer transfer through a licensed Class III dealer. Processing times vary. Contact us to begin your transfer.
The Infinity 556K ships with a medium back pressure end cap installed. Low and high back pressure end caps are available separately, giving you the flexibility to optimize suppressor performance for any host firearm — from bolt action rifles to suppressor-unfriendly AK and AR platforms. One suppressor, every gun.
