Originally Posted by tirod
The fixed carry handle sight is problematic - you basically use it that way, and forget about mounting a scope at the proper height. It can't. Otherwise, most AR15 builders use the A4 flattop with rail, as it's far more versatile. You can mount the M4 carry handle sight for the retro look, or use flip ups, and then add a red dot, too.
You should try a Colt 4X handle mount, the optic center line is less than .500" above the iron sight center line. Compared it to a typical 1-4X AR scope and one piece mount on a flat top it's just over 1" higher at the center lines. If you can't adjust your cheek weld for that, then the pigmy's shrunk your head.
There's nothing retro about a removable carry handle