The Beretta Cheetah, also known by its original model name of "Series 81", is a line of compact blowback operated semi-automatic pistols designed and manufactured by Beretta of Italy. They were introduced in 1976 and include models in .32 ACP (Models 81 and 82) .
These models are chambered for the .380 ACP (9 mm Short) cartridge. The 84 has a double stacked magazine with 13 round capacity, while the 83 and 85 have a single stacked magazine with seven and eight round capacity respectively, and resultant thinner grips. The 84 and 85 have a 3.81" barrel, while the 83 has a 4" barrel.