R45 45ACP 5/8X24 SILENCER BLK MATTE BLACK SILENCER Manufacturer Model Number: YHM-2190-24 Manufacturer: Yankee Hill Machine Company Model: R45 Caliber: 45 Caliber Type: NFA - Silencer Item Type: NFA Finish: Matte Black Cerakote Overall Length: 6.45 Weight: 14.5 oz. Shipping Weight: 1.5 Feature: 5/8X24 Direct Thread Mount Feature: Removable Rear Mount Feature: Accepts YHM Rear Pistol Mounts Optic Adjustable Objective: false Optic Reticle Illuminated: false