During the late 1920s, it looked like the German Army was going to replace the P08 Luger with a less expensive sidearm, and several major German companies developed prototype guns to meet this anticipated need. The replacement ended up being postponed for nearly a decade (the P38 would be the eventual result), and this led to most of the prototype ideas being dropped. The Walther company had designed a scaled-up version of its very popular PP, which was to be called the MP. Only a small number were made - Fritz Walther himself carried one in 9x19mm, and this example was made in 9x23mm Steyr in hopes of attracting interest from the Chilean military. It is a simple blowback action, quite literally an enlarged PP. In my opinion, it feels fantastic in the hand - it is curious to consider what it would have felt like to shoot.