Franz Stock Pistol

The Stock pistols, made by Franz Stock of Berlin, Germany, are of a simple blowback type They came out in the early 1920's in all three calibers: .22, 6.35 mm., and 7.65 mm. The first two to be produced were evidently the 6.35 mm. and the 7.65 mm. as they are the only ones mentioned in the 1923 edition of Bock. The AKAH Catalog issued in March 1925, however, shows all three as being available (Fig. 261).

The pistol has a fixed barrel. The slide, which extends the entire length of the barrel, has a portion cut away, exposing about two thirds of the top of the barrel. The breechblock unit, which also contains the firing pin (striker) and spiral spring, is set into the rear end of the slide and the extractor bar holds the unit in position. The extractor is located at the top of the breechblock unit, and expended shells are thrown upward by its operation. Removal of the magazine, which holds 7 cartridges in the 6.35 and 8 in the 7.65 mm. model, locks the action so that the pistol cannot be fired when the magazine is out, even though a cartridge is in the chamber.

To disassemble, the magazine is removed and the slide is pulled back as far as it will go and locked in that position by turning the thumb safety upwards. A large-headed screw, located in the rear end of the slide, is removed, whereupon the firing pin with its encircling spring can be shaken out. The forward end of the extractor bar is now lifted, thus unlocking the breechblock unit, which can now be slid forward and lifted out. Then the slide is drawn forward over the muzzle end and the spiral compression spring is removed. The whole operation need not take more than 30 seconds, and reassembly is as easy.

For the 6.35 mm. model the lowest serial number seen is No. 460 and the highest No. 9319; for the 7.65 mm. model the lowest is No. 6162 and the highest No. 17,322. No information is at hand concerning the total production of any of the models, nor is it known when production was stopped.

Only one .22 caliber Stock has been measured. While this model is of the same general type of construction there are some minor differences. The extractor is not at the extreme top of the breechblock, but is set at an angle, a little lower on the right side, so that expended shells are thrown to the right and upward rather than directly upward as in the other models.

The over-all length of the specimen examined (Serial No. 289) was 205 mm., length of barrel 138 mm., and height 100 mm. The sighting radius is long, as it should be for a target pistol, being 180 mm. The magazine capacity for this model is 10 rounds. The pistol could be obtained with different barrel lengths. For example, it could be obtained with a 190 mm. barrel and overall length of 260 mm. With this barrel the weight would be 700 grams.

The 6.35 and 7.65 mm. pistols have good balance, but the .22 cal. model is not so well balanced, having a longer barrel and a short grip. All of the pistols are well designed and very well made.

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