The PK-AS is a versatile, compact and waterproof sight with a rather unique working principle made by BelOMO (БелОМО) in Belarus.
Often people refer to it as reflex sight or red dot, which does no justice to its capabilities at all. Why? Take a look at these two photos:
The PK-01V (ПК-01V) is another red dot sight from Belarus made by BelOMO (БелОМО). It is a modern, mil-spec, light scope simple in design and construction used by both military and police forces. Due to its relatively cheap price but good performance it also enjoys great popularity on the civil market. It is particularly reliable and sturdy like most Belorussian sights.