The German military began looking for a new submachine gun design in secret in the mid 1930s. There is basically no surviving documentation, but the main contenders appear to have featured: Hugo Schmeisser's MK-36,II and Erma's EMP-36. Today we are taking a look at the two known examples of the Schmeisser design at the British Royal Armouries. It is a simple blowback design with a full wooden stock, and chambered for 9x19mm (although the second example, made for Hungarian trials, is in 9x25mm). It does have a quite strange magazine safety, which prevents the bolt from opening if a magazine is not present - the purpose of this is a mystery to me.

The Schmeisser gun was simple and effective mechanically (expect for that weird safety), and it ultimately contributed its magazine, bolt, and fire control system to the MP38 and MP40 design. In exchange, the Haenel company that Schmeisser works for was one of the two initial MP38 manufacturers.

Many thanks to the Royal Armouries for allowing me to film and disassemble this unique prototype! The NFC collection there - perhaps the best military small arms collection in Western Europe - is available by appointment to researchers:
https://royalarmouries.org/research/national-firearms-centre/

You can browse the various Armouries collections online here:
https://royalarmouries.org/collection/