MUZZLE BRAKE MINI 30CAL 1/2-28 YHM-3102-1MB-28A Manufacturer Model Number: YHM-3102-1MB-28A Manufacturer: Yankee Hill Machine Company Model: 30Cal Mini Muzzle Brake Caliber: 30 Caliber | 7.62mm Type: Accessory-Muzzle Brakes Item Type: Accessory Finish: Black Overall Length: 1.6" Weight: 3.2 oz. Shipping Weight: 0.25 Feature: Q.D. Mt for 30Cal Suppressor Feature: Includes Shim Kit Feature: Single Port Mini QD Brake Optic Adjustable Objective: false Optic Reticle Illuminated: false