Hey, wondering if 9mm Luger Ammo will work for the Beretta 92 FS?? Its a 9mm size gun so it should work, right?

Yes, these are all identical and will all work.
9 x 19 mm
9 mm
9 mm Luger (http://en.wikipedia.org/wiki/Luger)
9 mm NATO (http://en.wikipedia.org/wiki/NATO)
9x19mm
9x19mm NATO (http://en.wikipedia.org/wiki/NATO)
9 mm Parabellum (http://en.wikipedia.org/wiki/Parabellum)
9 mm Para

Thank you, sir