beretta makes the m9.. you may be talking about the same thing.
The M9 is made by Fabbrica d'Armi Pietro Beretta - the Beretta corporation. It's an Italian company.
Carlo Beretta, Giuseppe Mazzetti and Vittorio Valle from Beretta's design team all had a hand in creating the Beretta 92, which is what the M9 is.
The Beretta M9 was adopted by the US military in the year 1985.
Yes
The FS is the most advanced model of the Beretta 92. I wouldn't recommend the early M9 pistols (which were basically Beretta 92F pistols) over the 92FS, but the later production M9 pistols are 92FS pistols. The main difference being the the actual M9 pistol production is supervised directly by the DoD.
That is the correct spelling of the handgun model Beretta M9 (standard issue 9mm pistol of the US armed forces).
The Beretta 92 first entered production in 1975. The M9 variant of the Beretta 92F was adopted in 1985.
9mm Parabellum
M9 Beretta
100-400 or so
The Beretta M9 utilized 9x19mm rounds (standard 9mm fare).