Heh, need tracer rounds!
Out of curiosity, how consistent is the grouping of the airsoft guns? Turret rotation and elevation can be slowed down with diodes for scale and/or accuracy, but if the grouping is poor, it's going to be tricky no matter what. Pity we can't get tiny airsoft shells and rifled barrels...but I guess then we'd need to hire a tiny reloader.
Airsoft battles would definitely be way cooler than IR battles, especially if you could have some impact signs (paintballs, puff of powder or disintegrating BB, etc).
D.