1P78 is a telescopic sight manufactured by Novosibirsk Instrument-Making Plant and in use with the Russian Armed Forces, intended as a replacement for the older PSO-1 and 1P29 scopes currently being used by the Russian military.

The optic is intended to become the standard issue sight for the infantry riflemen within the Russian military.

With a magnification of 2.8x, it is similar to the Trijicon ACOG series of optical gun sights,[1] as well as other Soviet designs like the PO 3.5x21P and 1P29.

[3] The 1P78 is mounted by means of the standard side rail found in other Soviet and Russian weapons designated with the -N suffix.

It has an adjustable lens cap that can rotate freely that incorporates a spring-loaded detent that keeps it from moving around.