Abstract: This invention relates to a breech assembly of a gun adapted to fire caseless charges, ignited and enhanced with electrothermal chemical (ETC) charges. The gun utilizes charges as propellant and a plasma generator cartridge (PGC) for generating plasma when an electrical current is applied thereto. The breech assembly comprises a breech ring, a tilting block assembly, with a spindle installed and a sliding block for supporting or locking the tilting block assembly in a sealed position. The tilting block assembly is movable between a PGC firing orientation and a PGC loading/removal orientation. The breech assembly further includes a crank means, which includes a guide means for rotating the tilting block assembly from the PGC firing orientation to the PGC loading/removal orientation.

Abstract: A primer loader assembly (10) comprises a loading and feeding assembly (26) for receiving an elongate magazine (28) containing primers (24); an advancement member (30) for advancing the magazine (28) along its longitudinal axis, through the primer loader assembly (10) to bring a primer (24) in register with the said primer chamber (22); and a push rod (32) for loading the primer (24) into the primer chamber (22) by moving the primer (24) from the magazine (28) into the chamber (22). The magazine (28) defines a plurality of individual separate tubular openings (28.1) for containing the primers (24) separate from each other. The magazine (28) further defines a plurality of curved guide slots (28.5), for engaging the advancement member (30) and to advance the magazine (28) step-wise along its longitudinal axis.

Abstract: According to the invention there is a provided an obturation assembly for a gun of the type comprising a barrel of which a rear end defines a firing chamber having an obturation seat and the gun further having a breechblock, the obturation assembly comprising: an obturation set including an annular obturator pad for sealing against the obturation seat; an obturation spindle having a shaft and a head, the shaft extending coaxially through the obturator pad; a first shim for location between the obturation set and the breechblock, and a second shim for location between the obturation set and the head of the obturation spindle.

Abstract: A modular concept for a gun which uses a breech conversion kit allows the firing of cased and caseless ammunition with the same gun. The cannon has 2 breech mechanism (10) which includes a first sliding breech-block (19) which engages the rear end (15) of a cartridge case in the firing position. Said first sliding breech-block (19) is interchanged for a second sliding breech-block (21) when firing caseless ammunition. Said second breech-block is in contact with a scaling member (23) which is mounted pivotally on an axis (27) which is located on the upper face of breech ring (11).