Most propane in the United States is a byproduct of natural gas processing. It consists of 9% butane and 1% other miscellaneous gases.

A jet propane torch can be assembled with a few fittings and parts borrowed from a welder and gas grill.

Gas under pressure inside the tanks exists mostly in liquid form. Tilting the GrillGun with a full canister attached, either up or down, may cause the torch's liquid gas safety feature to trip.