This is probably the newest BelOMO optic available
in the US.
From what I can see these optics are not directly related to the PK-AA original but instead seem to be a new type of optic that is different from most everything I've seen. The body is not like the PK-A original which is actually based on the PSO series, and it's not clear why they are designated PK-AA at all since they don't have much in common with the original. The PK-AAs closest relative may be the PK01-Vi but I'm not completely sure yet, it's definitely different than any of the PK series that I've handled.
Other differences from PK-A original is the use of the BelOMO locking mechanism vs the Universal version of the SVD mount, 3600+ hour battery life and a much brighter maximum intensity setting. PK-AA has a lower 1/3 cowitness with the iron sights and weighs 21.7 oz.
PK-AA is one of the most modern and well designed
combloc style red dots on the market...far superior to
older models that we are more used to in the US.
The dot is much brighter than the camera shows, this is an easy one to pickup in full sunlight
Lower 1/3 co-witness