Me thinks you need a heavier spring or if your not certified to use more then 450fps a lighter BB My BA is a mess only shooting 400fps right now but with .28 or .30 bbs I way out range a well upgraded AEG and hittin the head or body dont make a diference' just hit them you have stealth and range on your side use them, when i run 500fps i still use .30 start getting into 550+ then use .32
really tho i think if ya adjust yoiur bb's youll find you do have an advantage over the aegs, just get a teammate to stay near u for the guys who entre your MED, witch at 450 fps you dont really gotta worrie about just shoot em in the body its easyer to hit anyhow
450FPS spring (SP120?)
Laylax trigger assembly
And BB Baster 0.36g bbs.
See, my knowledge of airsoft isn't too bad