MUZZLE BRAKE 223/5.56 1/2X28 3 CHAMBER Manufacturer Model Number: 00308 Manufacturer: POF USA Model: Muzzle Brake Caliber: 223 Rem | 5.56 NATO Type: Accessory-Muzzle Brakes Item Type: Accessory Finish: Black Anodized Shipping Weight: 0.2 Feature: Includes Locknut Kit Optic Adjustable Objective: false Optic Reticle Illuminated: false