Paintball gun with a window design to monitor the interior of the paintball gun

Abstract

A paintball gun with a window design to monitor the interior of the paintball gun includes a gun barrel, a sleeve, a firing bolt and an end cap. The sleeve and the firing bolt are disposed in the gun barrel. The end cap is located at a rear end of the gun barrel. The gun barrel is formed with at least one window thereon. The sleeve is cylindrical and transparent. When malfunction happens in the gun barrel, the window and the transparent sleeve enables the user to find out the problems.

1 . A paintball gun with a window design to monitor the interior of the paintball gun, comprising:
 a gun barrel, the gun barrel being in the form of an elongate tube and including a front end and a rear end opposite to the front end, the gun barrel being formed with a first window and a second window thereon, the gun barrel having an inner wall formed with at least one first annular groove for receiving a first O-shaped ring therein, a paintball dropping port being formed close to the front end of the gun barrel, the first window and the second window being located between the paintball dropping port and the rear end of the gun barrel;   a sleeve, the sleeve being hollow and transparent and disposed in the gun barrel, the sleeve corresponding in position to the first window and the second window;   a firing bolt disposed in the sleeve, the firing bolt having an outer periphery formed with at least one second annular groove for receiving a second O-shaped ring therein; and   an end cap located at the rear end of the gun barrel, the end cap having an outer periphery formed with at least one third annular groove for receiving a third O-shaped ring therein;   thereby, the first window of the gun barrel being adapted to observe the second O-shaped ring of the firing bolt that is operated in conjunction with the sleeve, the second window of the gun barrel being adapted to observe the third O-shaped ring of the end cap that is operated in conjunction with the firing bolt.