Abstract: A projection device for firing e.g. a squash ball comprises a one-piece plastics body with a transverse bore in which a trigger plunger is seated. The squash ball seats in a flaring muzzle cavity at the front end of the body. A blank cartridge is loaded into a firing chamber immediately behind the muzzle cavity, and having a breech formed by the front surface of the trigger plunger. The trigger plunger is pierced by an opening which, when the plunger is depressed, allows a sprung firing pin to move forward and fire the cartridge to eject the squash ball at high velocity. To prevent inadvertent discharge of the device, the head of the plunger is restrained by a withdrawable split pin and also by a hinging spring clip.

Abstract: A riot control weapon comprises a barrel, a fixed breech block, and there-between a chamber having a loading aperture through which a cylindrical round of ammunition can be inserted and ejected, the round being insertable by firstly a translational movement to bring the forward end of the round into the chamber, and secondly a rotational movement during which the round is pivoted until the round is fully chambered in alignment with the barrel, and wherein the chamber is provided with an obturating surface which extends continuously from a point adjacent the forward end of the chamber adjacent the loading aperture, rearwardly and away from the loading aperture to complete a closed loop within a cylindrical surface internally of the chamber, whereby the said rotational movement brings the round into sealing contact with the obturating surface around a complete loop.

Abstract: A riot weapon comprises a barrel; a fixed breech block; and therebetween a chamber having a loading aperture through which a round of ammunition can be inserted so as to rest against the breech block, or ejected; a loading catch for retaining a round of ammunition in the chamber; a trigger; a firing pin which can be actuated to fire a round of ammunition by moving the trigger, the firing pin having a normal rest position in the breech block; means for preventing release of the loading catch except when the firing pin is in the rest position; means for releasing the loading catch automatically following actuation of the trigger; and means for exerting a force on the round of ammunition in a direction such as to effect ejection thereof through the loading aperture; whereby following firing of a round of ammunition and consequent release of the loading catch, the spent round is retained in place against the ejecting force solely by the frictional force between the spent round and the breech block, the frictional

Abstract: 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.

Abstract: A firearm especially for firing large calibre rounds such as rubber bullets and having a rotary magazine which is rechargeable at any stage of depletion. A loading arm serves to guide rounds through an inlet opening in the magazine, in such a way that they are received into corresponding locations in a rotating carrier, and the carrier rotates forward one position with each additional round. Until the penultimate round, the guide means is locked to the magazine body. In this position, it obstructs further movement of the first-inserted round and thus prevents insertion of the final round. Mechanism is described by which, on insertion of the final round the guide means automatically unlocks from the magazine body and locks to the rotating carrier. In this condition it serves to keep the first inserted round locked in the magazine as it completes a full rotation to come opposite the inlet opening once more.