Sunday, July 30, 2017

The Roth–Steyr M1907, or, more accurately Roth-Krnka M.7 was the first self-loading pistol to be adopted by a major power.

The pistol was designed for and issued to the Austro-Hungarian cavalry during World War I.
It was developed by the Czech designer Karel Krnka, working for an ammunition company of Georg Roth, from an earlier design of Roth–Theodorovic pistol. After development and tests of several prototypes, the final version of the Roth–Krnka won the trials for an Army pistol in 1906, and was adapted as a standard gun of Austro-Hungarian Army designated, Repetierpistole M.7. (self-loading pistol M1907).

Since Roth had no weapon production capabilities, the government bought all the rights and contracted with Hungarian arms makers Steyr and FEG in Budapest.

The pistol is a locked-breech pistol, which allows the barrel and bolt to recoil together within a hollow receiver. The long bolt is solid at the rear, except for the striker grove, the front part is hollow and fits tightly over the barrel. The interior of the bolt has cam grooves cut into it, and the barrel has cam lugs which fit into the bolt grooves. When the pistol is fired, the barrel and bolt recoil together within the hollow receiver for about 0.5 inch. During this operation, the helical grooves in the muzzle bushing cause the barrel to turn 90 degrees clockwise, unlocking the bolt as it continues to the rear, cocking the action as it does so.The empty case is extracted and ejected. The bolt is now at the rear position and the recoil spring is compressed. Under the action of the recoil spring, the bolt closes and a new cartridge is pushed in the barrel, the bolt is locked and the pistol ready to fire.

The pistol was claimed to embody important advantages as a cavalry weapon, ease of ambidextrous operation and particularly in the isolation of the trigger system from the auto-loading action to reduce the possibility of accidental firing.

Chambered for the 8mm Roth-Steyr cartridge specific, to this model. The pistol does not have a detachable magazine, but features a fixed magazine loaded from the top with stripper clips.