A firearm is provided including a frame having a magazine receptacle, a trigger, and a magazine. Partitions 11 at both sides in a width direction of a pressure generating chamber 12 are provided so as to extend to the vicinity of an end of a reservoir portion 32 at the pressure generating chamber 12 side. One of the cones has a farther intermediate row of teeth and another one of the cones has a closer intermediate row of teeth. The dip tube assembly includes an adaptor operatively connected to the vacuum pump and an evacuator component which has a generally tubular configuration and a substantially flat open bottom closely overlying the bottom interior of the tank. A dual release fabric lock handle allows for the quick release of the deflated redundant abdominal PFD which then serves as an accurately thrown rescue inflatable. The pin feed holes are engaged with the feed pins of the plate cylinder, whereby the plate feed is guided.