5.56mm is one of the most ubiquitous calibers in the USA, so why not have a dedicated suppressor for your 5.56mm firearm? Made to deliver maximum sound suppression on .22 caliber centerfire cartridges, the ZEROD 556K keeps things light and tight with its compact K size footprint and direct thread mounts and an overall length of just 5.5". Although reasonable in price the ZEROED 556K makes no compromises in quality. Full 17-4 stainless construction and a nitride finish means this suppressor resists fouling and corrosion like no other. For easy disassembly, the included direct thread mounts feature 7/8 wrench flats and the suppressor features a 3/8 square drive in the end cap.