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A medicament delivery device for administering a medicament to a user includes a medicament reservoir and an entrance port and an exit port each disposed adjacent the reservoir. A gas chamber disposed adjacent the entrance port. The device includes a pressurizing mechanism operable to pressurize sai

A medicament delivery device for administering a medicament to a user includes a medicament reservoir and an entrance port and an exit port each disposed adjacent the reservoir. A gas chamber disposed adjacent the entrance port. The device includes a pressurizing mechanism operable to pressurize said gas chamber to at least a prescribed pressure. A first frangible membrane extends across the entrance port and separates the reservoir from the gas chamber. A second frangible membrane extends across the exit port. When the pressurizing mechanism is attached, at least one of the first and second membranes is responsive to the prescribed pressure in the gas chamber to burst to allow gas to flow through the entrance port and the reservoir and to carry the medicament through the exit port.

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A medicament delivery device for administering a medicament to a user includes a medicament reservoir and an entrance port and an exit port each disposed adjacent the reservoir. A gas chamber disposed adjacent the entrance port. The device includes a pressurizing mechanism operable to pressurize sai

A medicament delivery device for administering a medicament to a user includes a medicament reservoir and an entrance port and an exit port each disposed adjacent the reservoir. A gas chamber disposed adjacent the entrance port. The device includes a pressurizing mechanism operable to pressurize said gas chamber to at least a prescribed pressure. A first frangible membrane extends across the entrance port and separates the reservoir from the gas chamber. A second frangible membrane extends across the exit port. When the pressurizing mechanism is attached, at least one of the first and second membranes is responsive to the prescribed pressure in the gas chamber to burst to allow gas to flow through the entrance port and the reservoir and to carry the medicament through the exit port. passage, a vacuum source (44) in communication with the intake pipe, a vacuum switching valve (45) in communication with the vacuum source and an ECU, an actuator (46) being controlled by the vacuum switching valve and a rod (47) being coupled between the actuator and the valve.5. An air intake manifold as in claim 4, wherein the first and second portions are arranged in a substantially V-shape.6. An air intake manifold as in claim 5, further comprising a plurality of apertures (19) defined within the partition wall and a plurality of valves (16) rotatably disposed within the respective apertures.7. An apparatus ( 32) comprising:an aperture (19) defined within a partition wall (42), the partition wall separating an air passage into two portions within the apparatus,a flange (22) extending from an inner surface of the aperture, the flange defining a sealing face (22a),a plate-shaped valve (16) rotatably disposed within the aperture and being arranged and constructed to open and close the aperture, andan elastic sealing member (21) disposed along a peripheral edge of the valve, the sealing member including first and second projections (21a,21b) extending from the peripheral edge of the valve, wherein the first and second projections are arranged in a substantially V-shape and terminal ends of the first and second projections are disposed so as to closely contact the sealing face when the valve closes the aperture.8. An apparatus as in claim 7, wherein the first and second projections are arranged such that the first projection closely contacts the sealing face when positive pressure is applied to a first side of the valve and the second projection closely contacts the sealing face when positive pressure is applied to a second side of the valve.9. An apparatus as in claim 7, further comprising a plurality of apertures (19) defined within the partition wall and a plurality of valves (16) rotatably disposed within the respective apertures.10. An apparatus as in claim 7, further comprising an intake pipe (61) in communication with the air passage, a vacuum source (44) in communication with the intake pipe, a vacuum switching valve (45) in communication with the vacuum source and an ECU, an actuator (46) being controlled by the vacuum switching valve and a rod (47) being coupled between the actuator and the valve. (24). An alternative embodiment is also disclosed wherein the firearm (200) includes a recoil-reduction device (202) and the scope-mounting base (204) includes both front and rear adjustable recoil lugs (206, 208).