Well they were a bit OP, if you want the truth, even a non gun-nut, like myself, noticed that some things weren't quite right. You can't have a gun that's uber powerful and have no recoil. It's science, or something. xD
Yeah, well basically what I think is that you made a revolver in the form a badass looking 9mm pistol. That's also from the future? High power, high recoil. Low rate of fire, but good penetration!