MP5 used by Vietnamese Police Mobile Task Force Regiment
The MP5 (which stands for Maschinenpistole 5 in German) is a 9x19mm Parabellum submachine gun, developed in the 1960s by a team of engineers from the German small arms manufacturer Heckler & Koch GmbH (H&K) of Oberndorf am Neckar. There are over 100 variants of the MP5, including some semi-automatic versions. The MP5 is one of the most widely used submachine guns in the world, having been adopted by 40 nations and numerous military, law enforcement, intelligence, and security organizations. It was (and sometimes remains) widely used by SWAT teams in North America, but has largely been supplanted by M16 variants in the 21st century. In 1999, Heckler & Koch developed the Heckler & Koch UMP, the MP5's successor; both are available as of 2020.
The MP5 is manufactured under license in several nations including Greece (formerly at EBO – Hellenic Arms Industry, currently at ??? – Hellenic Defense Systems), Iran (Defense Industries Organization), Mexico (SEDENA), Pakistan (Pakistan Ordnance Factories), Saudi Arabia, Sudan (Military Industry Corporation), Turkey (MKEK), and the United Kingdom (initially at Royal Ordnance, later diverted to Heckler & Koch Great Britain).