The invention relates to a recoilless apparatus for firing conventional cartridge-based ammunitions comprising a gun barrel and a compensating mass launch tube wherein a projectile is accelerated in one direction inside said gun barrel counterbalanced by a compensating mass accelerated in the opposite direction inside said launch tube thereby minimizing recoil and further providing means of automatic ammunition handling.

The invention relates to a recoilless apparatus for firing conventional cartridge-based ammunitions comprising a gun barrel and a compensating mass launch tube wherein a projectile is accelerated in one direction inside said gun barrel counterbalanced by a compensating mass accelerated in the opposite direction inside said launch tube thereby minimizing recoil and further providing means of automatic ammunition handling.

A countermass liquid for a shoulder launched propulsion system that has low corrosivity, high density, low viscosity, and a constant viscosity as a function of temperature. Upon function of the shoulder launched propulsion system, the countermass liquid may be expelled through the breach end of the shoulder launched propulsion system by expanding propellant gas. The countermass liquid may be an organic salt selected from the group consisting of at least one or more of cesium formate and potassium formate.

A countermass liquid for a shoulder launched propulsion system that has low corrosivity, high density, low viscosity, and a constant viscosity as a function of temperature. Upon function of the shoulder launched propulsion system, the countermass liquid may be expelled through the breach end of the shoulder launched propulsion system by expanding propellant gas. The countermass liquid may be an organic salt selected from the group consisting of at least one or more of cesium formate and potassium formate.

The present invention relates to a counter mass container (2) enclosing a plurality of parallel axially extending channels (1). The invention also relates to an assembly of a plurality of such counter mass containers (2). The invention also relates to a weapon comprising a barrel (5) accommodating such an assembly.

The present invention relates to a counter mass container (2) enclosing a plurality of parallel axially extending channels (1). The invention also relates to an assembly of a plurality of such counter mass containers (2). The invention also relates to a weapon comprising a barrel (5) accommodating such an assembly.

A zero recoil Gun includes apposed reverse rifled barrels. A pivoting frame housing used to load and unload cartridges with two apposing firing pins located at the center point of breech ends of both reverse rifled barrels. A sliding pin that is used to lock or unlock said pivoting frame to barrel for firing position or loading position. A king firing pin used to push said two above mentioned apposing firing pins into bullet cartridge primer. A single trigger is mounted in above mentioned pivoting frame housing for movement between rest position and firing position. A breech end located on both apposed barrels where a single cartridge bullet is loaded in said both apposing breeches. A king pin hammer is used to cock the gun into the firing position. A king pin trigger interlock is movably mounted on pivoting frame that engages the king pin arrowhead mounted on the king pin to prevent the king pin from moving to the firing position. The king pin trigger interlock is moved into both firing position or the safety rest position by hand. Further a zero recoil gun with a radio frequency remote control apparatus to fire the weapon that includes a frequency receiver a battery and an electrical solenoid that moves the trigger.

The invention relates to a method for launching a projectile and a launcher comprising a barrel (1) accommodating a. a projectile (2); b. a rocket motor (13) at the rear end of the projectile (2) comprising a first compartment containing a first propellant; c. a countermass (3) at the rear end of the barrel (1); and d. a second compartment between the rocket motor (13) and the countermass (3) containing a second propellant, wherein said first and second compartments form a high pressure chamber (6) subsequent to firing of the projectile (2).

The invention relates to a method for launching a projectile and a launcher comprising a barrel (1) accommodating a. a projectile (2); b. a rocket motor (13) at the rear end of the projectile (2) comprising a first compartment containing a first propellant; c. a countermass (3) at the rear end of the barrel (1); and d. a second compartment between the rocket motor (13) and the countermass (3) containing a second propellant, wherein said first and second compartments form a high pressure chamber (6) subsequent to firing of the projectile (2).

The invention relates to a method for launching a projectile and a launcher comprising a barrel (1) accommodating a. a projectile (2); b. a rocket motor (13) at the rear end of the projectile (2) comprising a first compartment containing a first propellant; c. a countermass (3) at the rear end of the barrel (1); and d. a second compartment between the rocket motor (13) and the countermass (3) containing a second propellant, wherein said first and second compartments form a high pressure chamber (6) subsequent to firing of the projectile (2).