In this video we take a look at a rare example of one of the prototype submachineguns that bridges the gap between the MP5 and the UMP. Huge thanks for H&K for providing access to this model, as I continue research and preparation for Volume 2 of the Vickers Guide H&K Book Series, which will cover H&K's sub-machineguns and personal defense weapons. To view my preview my earlier video, covering the prototype sub-machineguns SMG I and II, click here: • Teufelshund Tactical Heckler and Koch SMG ...