Development
The Model 1907 Dreyse Pistol was designed by Louis Schmeisser (who had previously worked with Theodor Bergmann on the Bergmann Machine Gun) in 1905-6 and were marketed from 1907 onward. The first gun, the 7.65 mm Auto was the most unusual. Most of the cranked slide lay along the top of the barrel, with a short section projecting down behind the chamber to serve as the breech block.
The breech block was confined within a flat-sided frame with a bridge to carry the back sight and arrest the upper section of the slide. The recoil spring surrounded the barrel, enclosed in the frame and held by a collar engaging the front end of the slide through a spring catch. Pulling back on the finger grips at the front of the slide brings the breech block into view behind the frame.
The Dreyse pistol was fired by a striker whose tail protruded back through the rear of the breech block when the chamber was loaded. The entire top section of frame and slide could be pivoted on a pin in front of the trigger guard, being locked in the firing position by a catch at the rear of the frame. This final refinement was essential to dismantling; removal of the cranked slide would have been impossible otherwise.
The Dreyse design was strongly influenced by John Browning's FN M1900, though the Browning had its recoil spring above the barrel, while the Dreyse had a concentric recoil spring. Nonetheless, the overall shape was the same, as was the grip angle and surface design, the magazine release, the positioning of the manual safety and the breech blocks.
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