The Beretta Model 950 is a single-action only, semi-automatic pocket pistol designed and manufactured by Beretta starting in 1952 until 2003.
There are 2 versions of this model, the Minx and the Jet Fire, both of which have a tilted/tip-up barrel and an overall length of 4.5 inches.
The Minx is chambered in .22 Short with a magazine capacity of 6+1, has a 2.5 inch barrel length, and weighs 10.6 oz (empty).
The Jet Fire is chambered in .25 ACP with a capacity of 8+1, has a slightly smaller barrel length of 2.38 inches, and weighs 8 ounces (empty).
The original italian 950 models did not have a safety lever and are marked "950B". However, due to the import restrictions imposed by the Gun Control Act of 1968 (GCA), a thumb safety was added to all post-1968 models and the "950B" became the "950BS" ("S" for Safety). Oh, the irony of naming a model redesigned to comply with a gun control law as the "BS" model.