This model of Storm Lake® Barrel is 4.75 inches in length, has a 40 S&W caliber, two ports, and is the perfect companion for your Springfield® XD Service. Made in the USA, using first class grade material, this Storm Lake® Barrel is designed with modern technology to enhance your firearms capabilities. This Storm Lake® Barrel gives you the comfort and durability you expect from Storm Lake® and it helps you to pursue your target easily too.