I've been playing since about early October last 2016 but haven't yet had the pleasure of playing a MILSIM event. Have been interested, but haven't yet actually made it happen, so hopefully soon. Not really sure what "position" you could say I play, as I tend to pretty much roam all over. Not really a DMR, but not all up in the heavy gun fights, either.
Looking forward to learning more about MILSIM and getting more involved in more realistic airsoft!