The DoubleStar Carlson Mini muzzle brake is the same size as an A2 flash hider and is designed to reduce felt recoil. There are five slotted ports on the top of the brake that direct gas upward and help to reduce muzzle rise and felt recoil. The fully enclosed bottom of the Mini helps to keep dust and debris down when firing from a prone position. Threaded 1/2"-28 to fit 223 Remington or 5.56x45mm Nato barrels. Precision machined from 1045 Steel and then parkerized to military specification, the DoubleStar 223 Mini Carlson Compensator will withstand years of hard use. Overall length is 2.3125".