The CZ 99 is a Semi-automatic pistol, which is produced in Zastava Arms

Zastava Arms

Zastava Arms is a Serbian manufacturer of firearms and artillery. It was founded in 1853 when it cast its first cannons. It is currently the leading producer of firearms in Serbia and is a large contributor to the local defence industry...

, Serbia

Serbia

Serbia , officially the Republic of Serbia , is a landlocked country located at the crossroads of Central and Southeast Europe, covering the southern part of the Carpathian basin and the central part of the Balkans...

, first model developed in 1989. Designed with the intent to replace the Zastava M57 TT pistol as the standard issue handgun for the Yugoslavian Military

Yugoslav People's Army

The Yugoslav People's Army , also referred to as the Yugoslav National Army , was the military of the Socialist Federal Republic of Yugoslavia.-Origins:The origins of the JNA can...

 and Police. The frame design was influenced by the Walther P 88. the CZ 99 is primarily chambered in 9x19mm Parabellum with a 15-round magazine.

The pistol's name base, 'CZ', has no prior relation to the Czech series of CZ pistols

CZ 75

The CZ 75 is a semi-automatic pistol made by Česká zbrojovka Uherský Brod in the Czech Republic. First introduced in 1975, it is one of the original "wonder nines" featuring a staggered-column magazine, all-steel construction, and a hammer forged barrel...

, instead standing for 'Crvena Zastava', the manufacturer's former name.
While initially intended for the 9x19mm cartridge, there is a variant of the CZ 99 chambered in .40 S&W

.40 S&W

The .40 S&W is a rimless pistol cartridge developed jointly by major American firearms manufacturers Winchester and Smith & Wesson. The .40 S&W was developed from the ground up as a law enforcement cartridge designed to duplicate performance of the FBI's reduced velocity 10mm cartridge which could...

, primarily for foreign importers, with many of these handguns imported by the US in 1990.