Patent ID: 6904901

Claim:
A projectile gun allowing a user to shoot a plurality of projectiles including a first projectile, comprising: a. a magazine tube for containing said plurality of projectiles, wherein said magazine tube has a first end and a second end; b. a one-way valve closing said second end of said magazine tube, wherein said one-way valve allows air to flow into said magazine tube but does not allow air to flow out of said magazine tube; c. a pressure chamber attached to said first end of said magazine tube; d. a bore, having a first end and a second end, wherein said first end is attached to said pressure chamber in a position distal to said magazine tube; e. a muzzle valve, covering said second end of said bore, wherein said muzzle valve allows air to flow out of said bore but does not allow air to flow into said bore; f. a pump tube; g. a piston within said pump tube; and h. a connection between said pump tube and said pressure chamber, so that when said piston is pulled away from said connection, a vacuum is created within said pressure chamber which pulls said first projectile into said bore, and so that when said piston is then moved toward said connection, pressure is created within said pressure chamber, thereby shooting said first projectile through said bore and out of said projectile gun.