The YHM Fat Cat 5.56 NATO suppressor features new baffle geometry for reduced blowback. Built with the quality and attention to detail YHM is known for, the Fat Cat delivers excellent sound in a compact package. Made from 17-4 stainless steel and a Cobalt 6 blast baffle, it's full-auto rated and ready for hard use. At just 4.5" long with the sRx adapter (a full inch shorter than the Turbo K with its adapter), the Fat Cat's 1.94" diameter creates more internal volume for a deeper, more pleasing tone. With an average muzzle sound pressure level of 139dB, it's a high performer for its size. The Fat Cat includes the sRx 1/2" x 28 QD Adapter, Mini sRx Muzzle Brake, a YHM-2007, and a YHM-2146.Common Minimum Barrel Lengths:5.56 NATO = 10"