The Heckler & Koch MP5 is a submachine gun developed in the 1960s by the German company Heckler & Koch. Known for its compact size and versatility, the MP5 is widely used by military and law enforcement agencies around the world. It fires 9mm ammunition and features a blowback operation, making it reliable and easy to control. The MP5 has various configurations, including options for different barrel lengths and stock types. Its design allows for both semi-automatic and fully automatic firing modes, catering to different tactical needs. The weapon's accuracy and manageable recoil contribute to its popularity among users.