YANKEE HILL MACHINE R45 45 CALIBER RIFLE SUPPRESSOR is Yankee Hill Machine's versatile suppressor designed for multiple calibers. It features a tubeless design in 17-4 stainless steel with a notched rim and tri-port end cap. Direct thread mount with a 5/8x24 thread pitch and includes one wrench plus a 5/8"-24 Direct Thread HUB Adapter. Suitable for pistol calibers and centerfire rifles, it can handle calibers from 9mm Luger to 45-70. Length 6.45 in, diameter 1.563 in, weight 13 oz. Finish: Cerakote, Color: Black. Mount Style: Direct Thread. Caliber Range: 9mm Luger to 45-70.