I have a Cobra sight Made in Russia model 3KN-1C.

The batteries that came with it were 2-3.6V Lithium but I bought the adapter that allowed it to use a single 6V PX28L or a L544.

I’ve seen people talk about using straight AA batteries. I’m assuming they are talking about a different model of sight?
Or is it possible to use standard AA batteries in my sight?

Is there a good internet site that has information about these sights?

Check here, also links to a thread here at Arfcom about batteries:

https://russianoptics.net/Kobra.html