apollo pro

Hello, My wife bought an Armasight Apollo Pro as an open box item a couple years ago for me & it did not contain paperwork or specs on it. It does not have the side sticker on the side identifying the model. So, I am wondering if anyone can tell me a way to identify if it is the 336 or 640...

I received my new Apollo Pro 640 today. After reading the instruction manual 3 times, I think I have the info down pretty well, but would like to get in touch with some members who shoot this sight that would be willing to mentor me as I get it set up Rifle: JP Precision Rifle AR Scope...