It is made in China but is done so with collaboration between US, Russian, and Chinese engineers, and Leatherwood has been around for decades. I've never used anything from them but forum reviews are always pretty good, and the 5.56 version of the CMR has been out for a while with very good reviews, typically "inexpensive but not cheap".
The CMR-AK762 was designed specifically for 7.62x39 122gr and not 'our' 7.62
BDC are pretty easy to use actually, in this case the ranging scale on the right is for average male height/shoulder width, pick the one that fits and you have your range. It's 1.75m x 50cm so you can extrapolate for deer, coyotes, paper targets, etc, in case your not fighting zombies
Once you know your range just pick the distance on the scale and you should be spot on. Ranging scales and BDC seem pretty complicated at first but once you learn know to use it they are ultra simple and very fast. This scope is also set up to use as an illuminated 1x red dot so you can always revert back to the basics.
I would ideally like to use a TA33-13 which is the 3x ACOG with the 7.62x39 BDC but I'm trying to figure out a way to mount it without having to get on a step ladder to use use it.
