Just a thought, but be aware that if you use an AEG with a high ROF on auto then either be prepared to carry a load of midcap mags and change often, or do a lot of winding of hicaps to maintain the spring pressure to feed the bbs. High ROF may be useful, but an accurate rifle on semi, or three round burst (if you have a programmable mosfet fitted), can be far more effective that spraying 50-100 bbs down range in the hope of hitting something. That is really only worthwhile if you have a support gun and need to keep peoples heads down whilst your team mates move forward on them. I know BBs are cheap compared to paintballs, but why waste 100s of bbs when 2 or 3 can do the same job and you won't get someone being angry at overkill.