Dragunov sniper rifle
The PSO-1 ("Прицел Снайперский Оптический, Pritsel Snaipersky Optichesky", "Optical Sniper Sight") is a 4×24 telescopic sight manufactured in Russia by the Novosibirsk instrument-making factory (NPZ Optics State Plant) and issued with the Russian military Dragunov sniper rifle.