Patent ID: 7784456

Claim:
An air-compressed bullet gun assembly, including a barrel body, which includes a hollow tube which further includes a 1 st blocking flange and a 2 nd blocking flange, wherein said 1 st blocking flange and said 2 nd blocking flange are disconnected from each other, said 2 nd blocking flange divides said hollow tube into two connected parts: the 1 st air chamber and the 2 nd air chamber, said 2 nd air chamber is disposed in between said 1 st blocking flange and said 2 nd blocking flange, and said 1 st air chamber is provided with a screw hole; a bullet-firing device with two ends, in a cylindrical shape, positioned inside said hollow tube, including a 1 st protruding flange which corresponds to said 1 st blocking flange of said barrel body; around said bullet-firing device are provided a 1 st protruding flange, a 1 st air-tight loop and a 2 nd air-tight loop, wherein one end of said bullet-firing device includes a plurality of ventilators and a guiding pole; a blocking element with a center and two ends, including a locking hole in said center, a 2 nd protruding flange on one of said two ends, and a 3 rd air-tight loop on the other of said two ends, wherein said 2 nd protruding flange contacts tightly against said 2 nd blocking flange, said locking hole corresponds to said guiding pole for locking purpose and said locking hole further includes a 4th air-tight loop; and a rear cover, including a 5 th air-tight loop and is screwed within said screw hole.