I am shopping for my first tactical type gun, which is it's own batch of fun. While shopping I realized that the technology in optics has grown by leaps and bounds. While I keep up with traditional scope technology and am a life long hand gun owern this area of electronic sights has exploded, I missed the memo. I am trying to select a sight for a flat top 7.62 nato weapon. Use would be mostly 200 yards or under, more like 50 to 100 with 200 or more in a pinch. My eye sight is outstanding. Being a little old school I want something that will still work if the batteries fail, or useable iron sights. I don't have a good grasp of the basic choices, nor of the benefits of each technology branch. I'm good for 300-500 and in no rush to purchase it. Thoughts and opinions are greatly appreciated; thanks in advance.