TKB-506
The TKB-506 (Russian: ТКБ-506) was a small handgun designed to look like a cigarette case, developed by Igor Stechkin, allegedly on the orders of the KGB. == Design == The dimensions of TKB-506 are 11 x 9.2 x 2 cm. Weighing 0.44 kg empty, it could fire three 7.62 mm rounds, each held in a separate barrel only 2.5 cm long and each having a separate striker.