Abstract: A bullet-loading assembly is mounted on a toy gun. The toy gun has a body and a triggering assembly. The body has a handgrip, an outer chamber, a seal, a bullet chamber, a guiding slot and a bottle chamber. The triggering assembly has a bolt, a trigger, a hammer, a linking bar and a link. The bullet-loading assembly has a barrel, a bullet passageway, a magazine and a limiting member. The barrel is mounted on the body and has a rear end and a bore. The bullet passageway is defined through the handgrip and is located adjacent to the barrel. The limiting member is mounted securely around the barrel and has a limit formed located in front of the axis of the bullet passageway and presses against an uppermost ball bullet in the bullet passageway to prevent more than one ball bullet from entering the bullet chamber.

Abstract: A percussion mechanism for a gene gun has a gun body, a percussion assembly and a trigger assembly. The gun body has a trigger chamber, a tubular channel having a valve seat and communicating with the trigger chamber. The percussion assembly is mounted in the tubular channel and has a drive shaft selectively closing the valve seat, an adjusting plug, a spring and a drive lever abutting the drive shaft and extending into the trigger chamber. The trigger assembly is mounted in the trigger chamber and has a trigger and a hammer. When the trigger is pulled, the hammer strikes and pivots the drive lever to pull the drive shaft away from the valve seat, and pressurized gas in the tubular channel discharges into a barrel of the gene gun. The adjusting plug is movable to adjust the spring resilience to control how long the drive shaft is separated from the valve seat.

Abstract: A build-in pneumatic reducing valve for a gas-operated gun includes a valve body, a cartridge connector and a valve disk. The valve body has a valve seat and a cartridge connector seat that communicate with each other. The cartridge connector is mounted in the cartridge connector seat to engage a gas cartridge. The valve disk is slidably mounted in the valve seat to selectively form a restricted gap in the valve seat and has an enlarged valve port, a longitudinal passage and radial holes that communicate with one another. Also, the radial holes communicate with the restricted gap. Therefore, the compressed gas in the gas cartridge will enter the reducing valve such that the diminished pressures of the compressed gas will make operation of the gas-operated gun safe.

Abstract: A pressure valve device for a gas pressure cartridge has a pressure valve, a container connected to the pressure valve and a clip connected to the pressure valve. The pressure valve has an exhaust port and a gas inlet with a crewing portion. The container in which a gas cartridge is retained has a screwing opening screwed onto the screwing portion of the gas inlet. When the container is screwed onto the screwing portion, gas from the gas cartridge is input to the gas inlet. The pressure valve outputs a fixed gas pressure through the exhaust port into the compressed air gun. In addition, the clip on the pressure valve makes carrying the pressure valve device on a belt or the like easy.

Abstract: A pressure valve device for a gas pressure cartridge has a pressure valve, a container connected to the pressure valve and a moving mean for moving the cartridge in the container. The pressure valve has an exhaust port and a gas inlet connected to an opening of the container. Because the opening of the container corresponds to a gas opening of the small gas cartridge, the gas of the small gas cartridge inputs into the pressure valve via the gas inlet, and then the exhaust port outputs a fixed gas pressure into the compressed air gun. A clip is formed on the pressure valve whereby users can easily carry the pressure valve device on a belt or similar.