MP5: A slightly modified version of the HK54 first created in 1966
MP5K: Short (Kurz) version created in 1976.
MP5SD: An MP5 model with an integrated suppressor (Schalldämpfer) created in 1974
HK94: American import model of the MP5 with an exposed 16.54-inch [420mm] barrel and special SF (safe/semi-automatic) trigger group, designed for civilian use.
A barrel-mounted vertical foregrip and a ventilated barrel shroud were available for the stock HK94. The HK94 was made from 1983 to 1989, in three different configurations