The new SP5 was developed by Heckler & Koch as a semiautomatic, civilian sporting pistol (hence the "SP" prefix) that matches the look and feel of the famous MP5 submachine gun.The SP5 is designed and manufactured to meet the definition of a civilian pistol and marks the return of the roller delayed blowback system to an HK commercial product. This operating system is legendary in its accuracy and reliability. Originally developed on the Heckler & Koch G3 rifle, it has been used on several HK firearms.The SP5 retains many of the critical features of the MP5, including its precision machined components and attention-to-detail quality. The SP5 is manufactured completely in Heckler & Koch's Oberndorf factory in southwest Germany.