Tippmann Crossover .68 Caliber Paintball Marker Internal gas line FlexValve Technology allows operation under 300PSI, reduces recoil and improves air efficiency Three position selector switch changes from electronic to mechanical operation on the fly Center feed system Break-beam anti-chop eye system Magnetically activated Hall-Effect Electronics provides 6 firing modes including Safety Full-auto, 3-Shot Burst, NPPL, PSP, Millennium, Auto-Response or Semi-Auto