Good concept
That's kind of a cool idea. Although it'd be better if you added more realism, for example, more detail to the features of a gun, such as safety, cocking the hammer and uncocking it, stuff like that. Also, an error I noticed is that when you empty a clip in the D. Eagle, when you put a new one in and the slide unlocks, it doesn't have a bullet in the chamber. You have to then cock it. Might want to fix that...
But yeah, good concept. Boring after a little while, but interesting.