Tippmann A-5 E-Grip Paintball Marker Gun 3Skull 4+1 Remote Mega Set Three position external selector switch: Allows you to change modes on the fly. Magnetically activated Hall-Effect trigger: Lasts 7 times longer than physical switches. 5 Firing modes with a rapid 20 balls per second firing Battery door on back of grip makes replacing the battery a snap. Weatherproof