The OTs-23 Drotik (ОЦ-23 Дротик, Russian for "dart") is a blow-back operated machine pistol developed and used in Russia. The gun is also known as SBZ (Russian: СБЗ) from the initials of its designers — I. Stechkin, A.V. Baltser (А.В. Бальцер), and A.V. Zinchenko (А.В. Зинченко)The weapon has a three-position select fire switch; safe, semi-automatic, and three-round burst.