Thanks for adding me, and I look forward to good info. Now for my problem. I'm new to AR'S and red dot optics. I have a stag 15. It has iron sites fixed on the front and on the carry handle on the rear. I have removed the carry handle and mounted my red dot. I don't know how to sight in my red dot with the fixed front sight. How will I know if I'm on target. I do have a bore layer if that would help. Do I have to do this at the range?