Thankyou - I hadn't thought of that - you saved me some money undoubtedly.Where are you going to mount a long or extended eye relief scope on an AR? You will need a special mount or your cheek hanging off the end of the stock to use anything with more than 4" of eye relief.
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figured 2X would be perfect out to about 200 which is as far as I ever shoot.
you may need to forward mount it if you don't want your cheek on the back of the stock.