MINI QD BRAKE 9MM 5/8-24 YHM-31092-1MB-24A Manufacturer Model Number: YHM-3109-1MB-24A Manufacturer: Yankee Hill Machine Company Model: 9mm Mini Muzzle Brake Caliber: 9mm Type: Accessory-Muzzle Brakes Item Type: Accessory Finish: Black Overall Length: 1.6" Weight: 3.2 oz. Shipping Weight: 0.2 Feature: Q.D. Suppressor Mt. 9mm Bore Feature: Includes Shim Kit Feature: Single Port Mini QD Brake Optic Adjustable Objective: false Optic Reticle Illuminated: false