At the time of its introduction (around 1964), the Soviet PSO-1 scope was the most technically advanced scope ever designed for a mass-production rifle. The PSO-1 scope is manufactured in Russia by Novosibirsk instrument-making factory (NPZ) and was issued with the Russian military Dragunov sniper rifle.[1]. The current version of SVD scope is the PSO-1M2. This scope is different only in that it lacks the obsolete Infra-Red detector. NPZ PSO scopes with illuminated reticles are made from magnesium alloy and come with fully multi-coated optics. Considered the higher end of military side mount scopes, the quality is higher than other PSO-style scopes. It was specifically designed for the SVD as a precision scope for sniper activities. The PSO-1 features a red illuminated reticle with light provided by a simple diode bulb. It features professionally ground, crystal clear optics, a baked enamel finish for scratch protection, and an attached, quick-deploy, extendable sunshade.