Desert Eagle 50AE. Heavy, cumbersome, and difficult to shoot, but it'll look great in the war movies.
But in close combat you could effectively beat someone to death with it. So it's got that going for it.
“Desert Eagle 50AE. Heavy, cumbersome, and difficult to shoot, but it’ll look great in the war movies.”
Or an AR pistol in .450 SOCOM. Think of the parts commonality. Think of the knockdown power. Think how soldiers would look with that thing strapped to their leg