#7 – MP5
Buoyed by the success of the G3, Heckler & Koch were asked to create a small arms variant of the gun. The result was the MP5, which is used by almost every NATO nation due to it’s ability to fire up to 700 rounds per minute. It is currently manufactured all over the world, from the UK, Greece and Iran to China. However H&G released a new variant called the UMP which currently coexists with the MP5.