Aimpoint mounting location help

[seronian]

i see some guys mount aimpoint before the delta ring, mid of upper, close to RBUIS can you tell me what is the advantage on the 3 locations? currently have mine before delta ring at the very last slot.

thanks in advance.

[CLHC]

Found this thread via search. Might be dated some, but I think the principles still apply.

https://www.m4carbine.net/showthread.php?t=7500

[cqbdriver]

Couple more:
https://www.m4carbine.net/showthread.php?t=61811&highlight=location

https://www.m4carbine.net/showthread.php?t=40764&highlight=location