When the last cartridge has been fired, the magazine follower rises, and prevents forward movement of the retracted breechblock.
A comparison with the closed drawing will show the length of recoil of the barrel. The recoil spring is seen held compressed ready to drive the breechblock forward when released. The locking block has been cammed down, and the engagement notches in the underside of the breechblock may be seen.
The breechblock riding back over the hammer has rotated it about its axis pin causing its toe to thrust forward against the mainspring guide and thereby compress the mainspring.
When the weapon is open in this condition, a clip loaded with 10 cartridges is inserted in the feed guide. The cartridges are stripped down into the magazine with the thumb exactly as in the case of a Mauser rifle.
When the clip is pulled up out of the action, since the magazine follower is now down in the magazine well with cartridges on top of it, the breechblock is free and the recoil spring will drive it forward to chamber a cartridge.
On each successive pull of the trigger the hammer will be released to strike the firing pin and discharge the cartridge in the chamber. The barrel and breechblock will recoil until the barrel reaches its stop and is halted. At that point the locking block will be cammed down out of contact with its engagement notches in the underside of the breechblock.
The breechblock will then continue to the rear in its guide in the barrel extension carrying the empty cartridge case held in the extractor in its face, seen at the top of the front of the breechblock. The case hitting the ejector will be hurled out of the pistol. The compressed magazine spring will force the cartridges up to bring the next cartridge in line for loading, the cartridge being held in place by a lip at the top of the magazine well. The rearward stroke of the breechblock will cock the hammer. At the end of the recoil stroke, the recoil spring will reassert itself and drive the breechblock forward to chamber a cartridge and snap the extractor into the cannelure in the cartridge case for extraction. When the trigger is released, its spring will move it forward far enough to effect contact with sear to permit release of the hammer for firing the next shot. Note that this model is semi-automatic in that a pull is necessary on the trigger to fire each individual shot. This is a very desirable feature as it prevents firing more than one shot on a trigger pull, thereby preventing accidents. A full automatic pistol fired from one hand is not a practical weapon, since it cannot be held effectively on a target.
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