The Bergmann M1897
A design by Theodor Bergmann, the Bergmann M1897 was created to be the refinement of the Bergmann M1896 pistol. Utilizing a locked breech blowback operating system, the M1897 was designed to be a military pistol, especially for the newly expanding German Army. Perhaps the most profound improvement was the use of a ten round detachable box magazine, whereas the M1896 was loaded using a five round en bloc clip, thus greatly increasing capacity and ease of loading. The pistol fired a rimless 7.8mm cartridge, and when I say rimless, I mean that it lacked a rim of any kind whatsoever. The pistol also lacked an extractor, rather cartridge casings were ejected by the gas and force of the pistol firing.
Around 800 Bergmann M1897 pistols were produced. A few were made in carbine version with a detachable buttstock/holster. Unfortunately the German Army made little use of the pistol, favoring the C96 Mauser broomhandle instead. In 1901 the pistol was presented to US Army Ordnance for testing, but again was rejected.