100-400 USD
100-450 US dollars depending on EXACTLY what you have.
Beretta made a LOT of different 9mm pistols. However, if you are asking about the M9 pistol used by the US Army, it is about 8.5 inches long.
Loaded or unloaded?
Check the Beretta website.
Beretta M9 9mm
The USMC uses the Barretta 9mm.
That is the correct spelling of the handgun model Beretta M9 (standard issue 9mm pistol of the US armed forces).
I just purchased a 9mm Beretta FS pistol. I would like to know the caliber of the round that this gun takes.
The Beretta M9 utilized 9x19mm rounds (standard 9mm fare).
50-200
The Beretta 92F (also known as model 92SB-F) was developed in 1983. This model is a further modification of the model 92SB that featured a slightly re-shaped grip, plastic grip panels and a new, more durable finish. The Beretta 92FS was submitted for USA XM9 Army Pistol Trials in 1985. Adopted by US Military as a M9 pistol, 9mm. Manufactured both in Italy and in USA. Also adopted by many other military and law enforcement forces. Features chrome lined barrel, recurved triggerguard for improved two-hands grip, new grip panels and lanyard ring, 'Bruniton' finish, and a trigger bar disconnect safety.