HK UMP (UNIVERSAL MACHINE PISTOL) .45 ACP FULLY AUTOMATIC
The UMP (Universal Machine Pistol) was developed as a lighter successor to the MP5. It was designed to fire larger caliber rounds than its predecessor in order to provide more stopping power against unarmored targets. The U.S. Customs and Border Protection agencies adopted the UMP because of its light weight and reliability.
Muzzle Velocity: 935 ft/s (285 m/s)