RESONATOR R2 QD 30 CAL W/MB INCL 5/8-24 QD MUZZLE BRAKE Manufacturer Model Number: YHM-2130-MB-24 Manufacturer: Yankee Hill Machine Company Model: Resonator R2 Caliber: 30 Caliber | 7.62mm Type: NFA - Silencer Item Type: NFA Finish: Matte Black Cerakote Overall Length: 7.825" Weight: 16 oz. Shipping Weight: 1.0 Feature: Incl: 5/8-24 QD Muzzle Brake Feature: Tubeless Design Feature: Full Auto Rated Optic Adjustable Objective: false Optic Reticle Illuminated: false