Paintball markers or paintball guns, is the main equipment in the sport of paintball. Markers are powered by either CO2 or compressed air. CO2 tanks come in various sizes, but a 20 oz tank is the standard. Compressed air is the professional choice because of its consistent output. There are basically two types of markers, electronic and mechanical. Electronic markers have microswitches, sensors, and infrared switches in the grip to achieve short trigger pulls and high rates of fire. Mechanical markers use pneumatics, springs, and levers to achieve a similar result. Full description of