hmm,i was kinda thinkin about gettin a 9mm glock.but i might just get a p226 legion and do this
.40S&W Glocks can also easily be converted to .357 SIG but what does that have to do with .44 Magnum Desert Eagles? The Glock and Sig are boring, unglamorous duty tools. The Desert Eagle is an ego-gratifying brag-gun to show-off, a movie-gun and a novelty.
You didn't answer the questions about what you are looking for, what you are trying to do with the gun, and what its purpose will be. I suspect you're just enamored with how cool super-powerful automatics are. In that case, what you need is a Webley-Vickers .50-80.