The PGO-7V (1OP19-1), PGO-7V2 (1OP19-2), PGO-7V3 (1OP19-3) grenade launcher optical sights are designed for mounting on grenade launchers and used for battlefield surveillance and aiming the grenade launcher at the target when firing against fixed and moving targets.

Different sight versions are due to grenade launcher types and differ from each other in reticle variants:
PGO-7V (1OP19-1) - for the RPG-7, RPG-7D grenade launchers;
PGO-7V2 (1OP19-2) - for the RPG-7D1, RPG-7V grenade launchers;
PGO-7V3 (1OP19-3) - for the RPG-7VR grenade launcher.

Reticle illumination is provided for use at night.

The sights can be used at ambient temperatures from minus 50 to plus 50 °C and a relative humidity of 95% at 25 °C.