Magnum Research/IMI Desert Eagle
.50 Action Express or .44 Magnum or .357 Magnum or .440 Cor-bon or .41 Magnum
This large pistol has been in production since 1982 and uses a gas-operated mechanism similar to assault rifles that enable it to fire larger calibres, resulting in larger size and smaller magazine capacity. It is very popular in TV shows and films because of the impressive look, but is really only used for hunting and target shooting.
It can easily change barrels to allow different calibres and the barrels use polygonal rifling.