soldering gun is a tool used for soldering metals using tin-based
solder to achieve a highly conductive contact. A soldering gun uses
a pistol shape, and has a trigger style switch so it can be easily
operated with one hand.
Applications for soldering guns include soldering high current load
wires, often found in cramped spaces within a vehicles bodywork.
The tip shape of a soldering gun, in the form of a wire loop, is
advantageous for getting into confined space; the tip can be rotated
to get into a gap between neighbouring components. This is not practical
with the cone shape of a usual soldering iron.