The recoil spring is now free to return its stored energy to the cycle of the weapon by beginning to return the slide forward.Īs the return spring returns the slide forward, the breech face strips a round from the magazine into the chamber and the locking system engages the barrel and locks it with the slide in the battery position. Shortly after ejection the slide's rearward travel is arrested by the compressed recoil spring and the abutment of mated surfaces of the slide and frame. As the pistol is being fired and the recoil of the pistol is in motion, a lug and groove system around the barrel rotate the barrel 20° until a lug hits a stop wedge and holds the barrel while the slide is free to continue its rearward travel, the extractor claw withdrawing the spent casing against the breech face of the slide until the casing strikes the ejector and departs the weapon via the ejection and loading port. The Steyr M1912 handgun is operated by a system of short recoil, the barrel unlocking from the slide by rotation.
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