Theoben make a gasram under lever with a magazine.You have to cock the gun for each shot .I do wonder how this system stop you dry fireing your gun when the mag is empty.To load a pellet one at a time is not to hard ,I have guns with and without mags ,mags are not that good .Some times you forget to look if they are empty ,[you shoot a blast of air at rabbit] ,on my hw 100 if you forget to engage the mag you shoot one shot ,shot 2 is a puff of air .[you shoot a blast of air at rabbit.].The theoben mags damage the skirts on soft pellets .desroying accuracy .[you may as well shoot a puff of air