Projectile launcher

A launcher (1) for a projectile comprising a storage and launching tube (2) configured to receive a projectile (P), a bolt (3) sealing one end of the tube (2), a thruster (4) arranged in the tube (2) between the bolt (3) and the projectile (P), comprising a pressurized gas reserve (5) and suitable for applying an ejection force to the projectile, a plug (6) closing the other end of the tube (2), having a locked configuration in which the plug (6) engages an internal wall of the tube (2) so as to close the tube (2) and to hold the projectile (P) in the tube (2) and an unlocked configuration in which the plug (6) is free relative to the tube (2), and a trigger (7) having a retracted resting configuration and a deployed configuration, suitable for triggering, causing the plug (6) to pass from the locked configuration to the unlocked configuration, wherein the trigger (7) is pneumatic and is supplied with pressure by the pressurized gas reserve (5).