Air Saw is a much lighter version of a Sawzall

I am doing some body work on my old Ford truck and I have been using my cordless Milwaukee Sawzall to do some sheet metal cutting. My sawzall works great, but it is heavy and bulky. Sometimes I can't get it into places I am trying to cut because of the cordless battery and rather large size of the saw. Is there another alternative?

Air saws are commonly overlooked and are not very well known. An air saw is lighter and generally more powerful than its electric cousin, the Sawzall. Most auto shops already have an air compressor to run their impacts and air ratchet wrenches. An air saw will run off the same shop air as well. Since the power source for an air saw is an air compressor, the air tool itself is considerably lighter and smaller with the same or greater cutting power.