Aw man you gotta get a compressor! I understand. I have a small compressor and it only powers the big gun for a few seconds. Enough to loosen a stuck bolt, or put on a lug nut, but not much more. Most guys that have a compressor already have a gun.
I had air lines run off my S-10 since it had air susp. for power tools or what ever the need, could swap out the tires in a hurry at the drag strip , It had a 12gal tank but it was run by an engine drive compressor so I never ran out of air.