Finished a PSA upper and lower with a stainless upper that I am anxious to get out to the range. Picked up a Simmons 6.5 x 20 x 50 scope from Midway over a year ago and am thinking of putting it on this new AR. I know I need taller mounts for the optics to clear and also to move the scope forward. There seems to be a lot of choices out there and I am leaning towards the one piece mounts. I see some that apparently have enough clearance they can still mount a rear site. Looking for options - pictures and links would be helpful. Thanks