The Fortis Muzzle Brake for 9mm firearms features precision machining and 4140 steel construction with a durable nitride coating for superior performance and longevity.Fortis 9mm Muzzle Brake with 1/2x36 threading4140 steel construction for maximum durabilityNitride coated black finish for corrosion resistanceEliminates muzzle rise for improved accuracyIncludes crush washer for proper installationMade in the USA with premium machiningDesigned to keep your speed and accuracy up while putting more rounds on target this muzzle brake delivers unmatched performance for 9mm firearms with its precision-engineered design.