Gas-operated firearm device e.g. gas operated gun, has input mass moved from initial position to end position in direction opposite to projectile in barrel based upon movement of projectile, which is accelerated by magnetic force

摘要

The gas-operated firearm device (100) has a compressed gas reservoir (110), and compressed gas valve (120) for controlling a metered delivery of the compressed gas from compressed gas reservoir, so as to accelerate a projectile. An input mass moved from an initial position to end position in a direction opposite to the projectile in barrel based upon movement of the projectile, is accelerated by magnetic force.