YANKEE HILL MACHINE RESONATOR K 30 CALIBER RIFLE SUPPRESSOR Enter YHM's .30 caliber "K-Can", the ResonatorA(R) K. Care, the blast chamber is threaded to the popular 1-3/8"-24 thread which allows it to utilize many available mounting options currently on the market. The new end cap design helps greatly reduce flash signature. The ResonatorA(R) K can be used on rifle calibers ranging from .17 HMR through 300 RUM. The ResonatorA(R) K uses a tubeless design which consists of heat-treated 17-4 stainless steel and a heat-treated 718 Inconel blast baffle which allows the suppressor to be full auto-rated and designed for rigorous use. Comes Mfg: Yankee Hill Machine Co., Inc.