A telescopic cylinder assembly in automatic reloading system of a toy gun is disclosed. It comprises an external cylinder having an internal space formed therein, an internal cylinder located at the internal space of the external cylinder and configured to be movable in longitudinal direction of the external cylinder, a nozzle at least a part thereof is located inside the internal cylinder and configured to be movable in longitudinal direction of the external cylinder, a nozzle supporter connected to the internal cylinder and configured to support the nozzle, and a cylinder valve configured to open and close a front outlet of the nozzle. The internal space of the external cylinder is expanded primarily in accordance with the movement of the internal cylinder, and the internal space is further expanded secondarily in accordance with the movement of the nozzle.

A telescopic cylinder assembly in automatic reloading system of a toy gun is disclosed. It comprises an external cylinder having an internal space formed therein, an internal cylinder located at the internal space of the external cylinder and configured to be movable in longitudinal direction of the external cylinder, a nozzle at least a part thereof is located inside the internal cylinder and configured to be movable in longitudinal direction of the external cylinder, a nozzle supporter connected to the internal cylinder and configured to support the nozzle, and a cylinder valve configured to open and close a front outlet of the nozzle. The internal space of the external cylinder is expanded primarily in accordance with the movement of the internal cylinder, and the internal space is further expanded secondarily in accordance with the movement of the nozzle.

A three-stage air pump assembly for a pneumatic air gun. The three-stage air pump assembly includes an air compression assembly and an energy storage assembly disposed on a gun support of the pneumatic air gun. The energy storage assembly includes a three-stage air pump and a main check valve disposed at the end of the air pump. The three-stage air pump includes a front fixed sheath, a rear fixed sheath, a front movable sheath, a rear movable sheath, a first tube, a second tube, a third tube, and a piston rod. The diameters of the first tube, the second tube and the third tube are successively reduced. An intake sleeve on the main check valve is sealed and fixedly connected in the rear fixed sheath. Front and rear ends of the first tube are sheathed on the front fixed sheath and the rear fixed sheath, respectively.

A three-stage air pump assembly for a pneumatic air gun. The three-stage air pump assembly includes an air compression assembly and an energy storage assembly disposed on a gun support of the pneumatic air gun. The energy storage assembly includes a three-stage air pump and a check valve disposed at the end of the air pump. The three-stage air pump includes a front fixed sheath, a rear fixed sheath, a front movable sheath, a rear movable sheath, a first tube, a second tube, a third tube, and a piston rod. The diameters of the first tube, the second tube and the third tube are successively reduced. An intake sleeve on the check valve is sealed and fixedly connected in the rear fixed sheath. Front and rear ends of the first tube are sheathed on the front fixed sheath and the rear fixed sheath, respectively.

A hand-held cracker snap for spraying projectile includes a main unit, a button, a disk, an air cylinder and a nozzle. The button is loosely disposed in the main unit. The disk is disposed in the main unit and is connected to the button. The air cylinder is disposed in the main unit and is provided with a central tube that can be extended or compressed along an axis repeatedly to suck or squeeze air to or from the air cylinder. The nozzle is a tubular element in the connecting pipe. An end of the nozzle is connected to the interior part of the air cylinder, allowing air to enter or exit the air cylinder via the nozzle. The nozzle guides air into the bullet.

A hand-held cracker snap for spraying projectile includes a main unit, a button, a disk, an air cylinder and a nozzle. The button is loosely disposed in the main unit. The disk is disposed in the main unit and is connected to the button. The air cylinder is disposed in the main unit and is provided with a central tube that can be extended or compressed along an axis repeatedly to suck or squeeze air to or from the air cylinder. The nozzle is a tubular element in the connecting pipe. An end of the nozzle is connected to the interior part of the air cylinder, allowing air to enter or exit the air cylinder via the nozzle. The nozzle guides air into the bullet.

The bore channel of the tube barrel includes a first portion and a second portion. The first portion and the second portion are in communication with each other. A cross-sectional area of the first portion gradually decreases from an end close to the elastic bag to an end away from the elastic bag and eventually becomes equal to a cross-sectional area of an end of the second portion away from the exit port. The cross-sectional area of the second portion remains unchanged and is equal to a cross-sectional area of the exit port. when being shot out from the elastic bag, grain ammunition gathers at a connection between the first portion and the second portion, and further rushes toward a bottom of the second portion. Then the exit port is pointed at an insect, so that the grain ammunition is precisely shot at the insect through the exit port.

The bore channel of the tube barrel includes a first portion and a second portion. The first portion and the second portion are in communication with each other. A cross-sectional area of the first portion gradually decreases from an end close to the elastic bag to an end away from the elastic bag and eventually becomes equal to a cross-sectional area of an end of the second portion away from the exit port. The cross-sectional area of the second portion remains unchanged and is equal to a cross-sectional area of the exit port. when being shot out from the elastic bag, grain ammunition gathers at a connection between the first portion and the second portion, and further rushes toward a bottom of the second portion. Then the exit port is pointed at an insect, so that the grain ammunition is precisely shot at the insect through the exit port.

In an embodiment, an ejection mechanism includes an inflatable device with an inflatable object (e.g., a silicone impregnated or other airbag, etc.) that is folded back inwardly on itself into an interior space of the inflatable object (e.g., forming a convolution, etc.) to envelop an item for ejection from a tube. In order to eject the item, gas enters the inflatable device to facilitate expansion of the inflatable object. The tube structure withstands the pressure loading as does the convolution of the inflatable object. Due to the tube limiting the expansion, the inflatable object rolls against the tube inner surface as it expands to move and/or eject the item from the tube. The inflatable device may further include an inflatable object (e.g., one or more airbags, etc.) in a telescopic arrangement with inflatable telescopic or nested stages (or convolutions) to eject or release the item.