This 5.56 NATO Suppressor features reduced blowback-when compared to the previous model. The Turbo® K-RB utilizes a tubeless design made from heat treated 17-4 stainless steel along with a heat treated blast baffle. The combination of these materials allows the suppressor to be full auto rated and designed for rigorous use. The blast chamber of the Turbo® K-RB is threaded to the popular 1.375-24 HUB thread which allows it to utilize many available mounting options. The notched rim and tri-port muzzle on the end cap make it stand out among the crowd. - The Turbo® K-RB is built with the same care quality and attention to detail that has defined the YHM® brand for generations. - The Turbo® K-RB ships with the 1/2 x 28 Phantom® Q.D. adapter (1) YHM-2007 (1) YHM-2146 and Q.D. flash hider or QD muzzle brake. - Caliber: .5.56mm - Weight: 8.7 oz./11.5 oz.w/adapter - Length: 4.6/5.5 w/adapter - Diameter: 1.5625 - Construction: 17-4 Ph SS/Inconel 718 Blast Baffle - Mount: 1/2 x 28 Phantom Q.D. HUB adapter - Decibel Rating: 138 dB - Minimum Barrel Lengths: - 5.56 NATO: 10 Minimum barrel length - Full Auto Rated - NTOA Member Tested and Recommeneded 2023