Type: Internal Parts
Outside Diameter: 19 mm (0.75 inches)
Inside Diameter: 12.7 mm (0.50 inches)
Weight: 2.8 g (0.1 ounces)
Comments: Control your muzzle brake with the AR15/M4 Muzzle Crush Washers. This set is designed to let you time the muzzle brake and flash hider on your barrel for optimum shooting performance. Includes three crush washers.
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