An improvised projectile checking housing assembly having latch button and first and second sidewalls with first and second catch apertures opening as a catch latch recess of elongated structure using an improvised projectile checking spring opening to receive a locking key structure based upon the projectile receiving opening to the improvised projectile checking housing assembly. Alternate rearward translating lock gauge at the backside of a dart drum uses a follower and engaging cam surfaces locking and unlocking a pathway for correct dart alignment. Alternate motorized, non-motorized and pneumatic structures are disclosed with apparatus launch operations moving between checking and non-checking positions.

An improvised projectile checking housing assembly having latch button and first and second sidewalls with first and second catch apertures opening as a catch latch recess of elongated structure using an improvised projectile checking spring opening to receive a locking key structure based upon the projectile receiving opening to the improvised projectile checking housing assembly. Alternate rearward translating lock gauge at the backside of a dart drum uses a follower and engaging cam surfaces locking and unlocking a pathway for correct dart alignment. Alternate motorized, non-motorized and pneumatic structures are disclosed with apparatus launch operations moving between checking and non-checking positions.

The invention relates to an external chassis for a long firearm, the precision of which is increased owing to: 1. The incorporation of an external chassis, inside which the firearm is installed. 2. The anchoring of the firearm telescopically inside the external chassis using sliding rings with minimum friction. 3. The inclusion of a movement absorbing element. 4. The inclusion of guide bushings that limit the movement of the firearm to a single axis. With the above elements arranged as shown in the drawings, the inherent recoil produced in a firearm at the moment of firing, owing to the action-reaction effect of the stock-projectile assembly or the stock-discharge system, is suppressed and absorbed by the proposed invention, such that the stock remains immobile and no movement is transmitted to the shooter. As a result, precision is considerably increased and the optical sighting elements are not affected by sudden movements, thereby protecting these elements from possible damage and from being moved out of position. The elements described also ensure that the firearm moves only along the axis of the barrel, thereby guaranteeing precision. In addition, owing to the design of the invention, it can be incorporated not only into firearms having a specific new design, but also into existing firearms.

An air cylinder for pneumatic guns including a cylinder body. The cylinder body includes a side wall, a tubular air storage chamber, a piston capable of axially sliding along the side wall, an air charging hole, and an elastic member. The piston divides the air storage chamber into a first cavity and a second cavity. The air charging hole communicates with the first cavity. The elastic member is disposed in the second cavity and is capable of continuously pushing the piston towards the first cavity.

An improvised projectile checking housing assembly having latch button and first and second sidewalls with first and second catch apertures opening as a catch latch recess of elongated structure using an improvised projectile checking spring opening to receive a locking key structure based upon the projectile receiving opening to the improvised projectile checking housing assembly. Alternate rearward translating lock gauge at the backside of a dart drum uses a follower and engaging cam surfaces locking and unlocking a pathway for correct dart alignment. Alternate motorized, non-motorized and pneumatic structures are disclosed with apparatus launch operations moving between checking and non-checking positions.

An improvised projectile checking housing assembly having latch button and first and second sidewalls with first and second catch apertures opening as a catch latch recess of elongated structure using an improvised projectile checking spring opening to receive a locking key structure based upon the projectile receiving opening to the improvised projectile checking housing assembly. Alternate rearward translating lock gauge at the backside of a dart drum uses a follower and engaging cam surfaces locking and unlocking a pathway for correct dart alignment. Alternate motorized, non-motorized and pneumatic structures are disclosed with apparatus launch operations moving between checking and non-checking positions.

Systems, methods, and apparatuses are described for accelerating projectiles at high velocity. A barrel may include one or more heaters configured to heat a bore of the barrel prior to launch of a projectile. The barrel bore may be formed in a tungsten sleeve and may be heated to high temperatures. Heat from the barrel bore may be transferred to expanding propellant behind a projectile as it travels through the barrel bore.

The invention relates to a device for projecting a projectile B using a compressed air, in particular provided to be built into a replica weapon, associated with a source of electrical energy. The device comprises a sheath (10) which receives an electromagnetic means (12) for moving a movable piston (34) within the sheath (10) between a thrust nose (14) sealing a front (10-1) of the sheath provided with a projection tube, and a breech (18) sealing a rear (10-2) of the sheath. The invention also relates to a method for controlling the device.

The invention relates to a device for projecting a projectile B using a compressed air, in particular provided to be built into a replica weapon, associated with a source of electrical energy. The device comprises a sheath (10) which receives an electromagnetic means (12) for moving a movable piston (34) within the sheath (10) between a thrust nose (14) sealing a front (10-1) of the sheath provided with a projection tube, and a breech (18) sealing a rear (10-2) of the sheath. The invention also relates to a method for controlling the device.

A shooting controller of a paintball gun includes a mechanical shooting apparatus, an electric shooting apparatus, a pneumatic apparatus, and a switching apparatus. Operating the switching apparatus may switch the paintball gun between a mechanical shooting mode and an electric shooting mode. In the mechanical shooting mode, the mechanical shooting apparatus drives the pneumatic apparatus to shoot a paintball when a trigger is pulled. In the electric shooting mode, the electric shooting apparatus drives the pneumatic apparatus to shoot a paintball when a trigger is pulled.