The SP5 was developed by Heckler & Koch as a semiautomatic civilian sporting pistol that matches the look and feel of the legendary MP5 submachine gun. - Designed and manufactured to meet the definition of a civilian pistol the SP5 is loaded with authentic features like a Navy barrel with threaded tri-lug adaptor paddle magazine release fluted chamber and chrome-lined bore. - The backbone of the SP5 is the roller-delayed blowback operating system which is legendary for its accuracy reliability and smooth shooting dynamic. Originally perfected on the Heckler & Koch G3 rifle it has been used on several other HK firearms still serving today around the world. - The SP5 is manufactured in Heckler & Koch