The 9mm German designed submachine gun used by OMEGA was developed in what decade?
OMEGA (counterterrorism unit):  Its equipment and weaponry includes the Heckler & Koch MP5, the HK G36C and the Walther P99. Heckler &amp; Koch MP5: The Heckler & Koch MP5 (from German: "Maschinenpistole 5" , meaning "Submachine gun 5") is a 9mm submachine gun of German design, developed in the 1960s by a team of engineers from the German small arms manufacturer Heckler & Koch GmbH (H&K) of Oberndorf am Neckar.
1960s