PSO-1

thumb|Russian PSO-1M2 current military issue 4×24 telescopic sight thumb|Frontal view showing the designation PSO-1M2-1 thumb|View through a PSO-1 telescopic sight mounted on an SVD 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. It was introduced on 3 July 1963 together with the Dragunov sniper rifle.