ASR MUZZLE BRAKE 5/8X24 Manufacturer Model Number: AC857 Manufacturer: SilencerCo Model: Harvester Big Bore Mzzle Brake Type: Accessory-Silencer Accessories Item Type: Accessory Shipping Weight: 0.25 Feature: Harvester Big Bore 5/8x24 TPI Feature: 338Lap Muzzle Brake Optic Adjustable Objective: false Optic Reticle Illuminated: false