Abstract: This invention relates to a firing ground consisting of standard modules (1, 21, 25, 36, 52) which are preferably realized according to the ISO standards, the firing ground comprising in particular a ball-arrester module (1), one or more intermediate modules (21) which are arranged in front of the ball-arrester module (1), a so-called "firing positions" module (25) arranged in front of the last one of the intermediate modules (21), and a so-called "firing controller position" module (36) provided next to the "firing positions" module (25), each one of the modules being provided with structure (11) for quick connection to the adjacent modules, as well as with structure (12) for electric and/or hydraulic lines and/or adjacent module ducts connection, and with tight sealing along the connection wall with the adjacent module, with wheels (20) for motion during the assembling operation of the firing ground, and with inside heat- and sound-insulation (14), in addition to a number of other ancillary modules which ca

Abstract: A ballistic projectile arrester having a regeneration and/or recovery system for the impact material, and which is particularly suitable for the recovery of projectiles fired by small arms or the like in indoor firing ranges or shooting galleries is disclosed. The projectiles are fired into a quantity of granular material which is preferably fireproof and capable of dissipating the kinetic energy of projectiles in a safe way. The granular material is supported so as to provide a sloping surface having a maximum thickness at the point of penetration of the projectiles into the granular materials. The mixture of materials and projectiles is kept circulating in such a manner that the projectiles absorbed by the granular materials can be removed and the granular materials can be continuously recycled back into the separator to replenish the materials which have been removed from the impact area.