At least put an extended mag on it if not another silencer and a scope. Come one, make it look cooler than a Borderlands pistol.......
A USP with 30 or 40 rounds mag. That would be interesting.
You're already holding a minigun with both hands. There's really no way to suppress the recoil on a minigun.
Turret-foot attachment, anyone?
Light Rifles will probably never be
Depends on the iron sights, really.