1PN51

1PN51 (Russian: 1ПН51) is the GRAU index for a Soviet designed passive night scope for a range of Soviet designed small arms and grenade launchers. 1PN is the GRAU index of night vision devices, where PN stands for Nochnoy Pritsel (Russian: Ночной прицел) meaning night sight.

The scope weighs 2.1 kg and measures 276 mm × 210 mm × 140 mm (length × height × width).

It is attached onto a matching side rail on the weapon after which a lever on the scope is pressed to hold it in place.

The 1PN51 comes in a metal container with room for extra batteries, battery charger and the other accessories, weighing 6.45 kg in total.