Midwest Industries MI Two Chamber Muzzle Brake Black .357 Caliber. Constructed from tool steel with a phosphate finish the full auto brake is designed to lock on to the shroud at any point where back pressure exists. When the shooter pulls the trigger the brake forces the barrel downrange where it can be effectively struck with the shoulder of the hand to maintain the muzzle position and redo the shot. When the shot is off-center the muzzle climb can cause accuracy problems. Midwest's new Muzzle Brake solves this problem by using two chambers opposed to one chamber which redacts the muzzle climb. Also provides a small reduction in recoil that will allow the shooter to keep the muzzle centered over the target to start each shot. The two chamber design is a proven design and the Midwest Industries Muzzle Brake beats the competition. Specifications for Midwest Industries MI Two Chamber Muzzle Brake: Manufacturer: Midwest Industries Color: Black Finish: Phosphate Fabric/Material: Steel Condition: New Country of Origin: USA Features: Large two chamber design reduces muzzle climb Constructed from tool steel with a phosphate finish Includes new crush washer Package Contents: Midwest Industries MI Two Chamber Muzzle Brake Midwest Industries MI-MB10: MI Two Chamber Muzzle Brake Black .357 Caliber