Actuating mechanisms for small arms

摘要

PCT No. PCT/GB81/00122 Sec. 371 Date Mar. 15, 1982 Sec. 102(e) Date Mar. 15, 1982 PCT Filed Jul. 1, 1981 PCT Pub. No. WO82/00345 PCT Pub. Date Feb. 4, 1982.A self-loading firearm for firing rubber bullets and the like has an actuating mechanism comprising a toggle linkage which is straightened on operation of the trigger against its spring bias. Initial straightening of the toggle linkage moves the breech block forward to locate a round of ammunition in a short socket at the chamber end of the barrel. As the toggle linkage moves over center it locks the breech block forward and displaces a sear to release the firing pin. The round is fired with its case virtually unsupported. On release of the trigger the toggle mechanism is bent so withdrawing the breech block and the spent round which is automatically ejected. The firing pin is simultaneously re-cocked. Rotary and vertical stacking rechargeable magazines are described, from which a fresh round is automatically fed to the breech on ejection of a spent round.