YHM's .45 caliber sound suppressor, the R45, was created to provide the shooting enthusiast a quiet, lightweight and cost effective suppressor. The notched rim and tri-port muzzle on the end cap make it stand out among the crowd. Like the Turbo T2, the Resonator R2 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.