PU scope

The PU scope (ПУ, прицел укороченный, 'Scope short-cut' in comparison to PE/PEM telescopic sight) is a 3.5×21 telescopic sight of Soviet manufacture, widely used since 1940 on the SVT-40 rifle for which it was originally designed and since 1942 on the Mosin–Nagant rifle.

[1] The PU telescopic sight has a fixed at 3.5 power magnification.

The bullet drop compensation (BDC) adjustment in the elevation turret is free spinning under grease friction.

The design turned out to be so successful and in demand that production was not stopped after World War II and the sight was converted for and used on other small arms.

that Soviet optical instrument makers attempted to create a 6× version of the telescopic sight, this has been refuted.