9x19, also known as the 9mm Luger or 9mm Parabellum.
The M9 pistol uses an "oscillating Block" locking system. At the moment of firing, the slide and barrel are locked together. They are both driven rearward by recoil- but after about 3mm of travel, the barrel tips down, unlocking from the slide, which continues to the rear. For additional information, do a web search for 3-23.25, the manual on the M9 pistol.
This is a .22 caliber air pistol not a .177 caliber pistol. See the link below for the owners manual.
The USMC uses the Barretta 9mm.
Small inexpensive pistol
5-60 USD or so
The M9 is a standard 9mm round. the M9 is actually a .355 caliber
9mm
Condition 2, does not apply to the M9 Service Pistol.
Ejector
The M9 is chambered for the 9mm Luger, metrically known as the 9x19mm, less commonly known as the 9mm Parabellum. All 9mm cartridges with any of these names are interchangable.
15,000 rounds.
Condition 2
The Beretta M9 utilized 9x19mm rounds (standard 9mm fare).
The Beretta M9 pistol is chambered for the 9x19mm Parabellum cartridge, commonly referred to as 9mm. This caliber is widely used by military and law enforcement agencies around the world due to its effective balance of stopping power and manageable recoil. The M9 has been the standard sidearm for the U.S. military since the 1980s.
The M9 service pistol, used by the U.S. military, has a standard magazine capacity of 15 rounds. Additionally, it can chamber a total of 16 rounds when one is loaded in the chamber. The M9 is designed to fire 9mm NATO cartridges.
No. The frame does.
The effective range of the M9 service pistol is about 50 meters, but it can potentially hit targets at distances up to 1800 meters. However, its accuracy and lethality greatly diminish beyond the effective range.