3.5x scope of Soviet manufacture from WW2 era

The PU Scope is a Weapon Attachment in DayZ Standalone.

The PU Scope was standard issue to Soviet snipers during WWII. It can be mounted to the Mosin 9130 and SKS rifles. With less magnification than the ACOG Optics, It makes for a poor sniping scope except at medium range, such as in Chernogorsk.

Note: Despite the in-game description stating it has the correct 3.5x magnification, the PU only zooms 2.08x compared to the naked eye. A poor conditioned PU Scope will have a cracked lens making it harder to use.

Where to find PU Scope ?