AEG with EBB gives no perceived recoil. The ebb is often just a piece of sheet metal that makes the bolt look like it's moving... It often stresses the gearbox unnecessarily. *And also makes the AEG whine more, in my opinion.
I have never seen a game where it is GBBR only. No host would put those limitations in place without a dedicated group of players as it limits the player base too greatly.
There are often games where there are pistols only or shotguns and pistols matches... It's a game to remove auto fire and long range engagements.
Ár skal rísa, sá er annars vill
fé eða fjör hafa. Sjaldan liggjandi úlfur
lær um getur né sofandi maður sigur.