ASR MUZZLE BRAKE 3/4X24 Manufacturer Model Number: AC858 Manufacturer: SilencerCo Model: Harvester Big Bore Mzzle Brake Type: Accessory-Silencer Accessories Item Type: Accessory Shipping Weight: 0.25 Feature: Harvester Big Bore 3/4x24 TPI Feature: 338Lap Muzzle Brake Optic Adjustable Objective: false Optic Reticle Illuminated: false