Convertible track mounted running target

A support structure and system which holds a cardboard or paper target above a small, lightweight carriage which moves back and forth under operator control. The system is highly portable (with the exception of the track) and can be set up very quickly and easily. The unique design allows use of commercially available, rolled steel beams (such as standard I-beam or flat bar steel) to implement the track structure. The universal mounting design allows the target system to attach to an I-beam track in any one of 8 different ways. Specifically, it can run "right side up" or "up side down"; it can mount on either of the two flanges of the I-beam (such that two target systems can operate simultaneously on a single track); and its motor drive unit can be positioned on either end of the track. The low-mass carriage and the increased-traction roller design allow the quick direction changes necessary in tactical target training.