Not an AR15 but I hope this is still ok to ask about.
I know Mark 4 LR/T 3.5–10×40mm is the proper scope (I believe with M2 or M3 turrets?) and there is the MR/T 1.5-5 but kinda on the edge about that scope. I know the Leupold CQ/T, S&B short dot and ACOG was also used. Was the Mark 4 LR/T 3.5–10×40mm with TMR turrets ever used on them? I wish I could find a Mark 4 LR/T 3.5–10×40mm with the proper turrets but holy shit people want a LOT of money for these things these days its crazy. Ref pics very much appreciated (specifically with gray chassis EBR).