InventGeek has created a nifty USB or R/C controlled Airsoft Turret gun that’s capable of shooting up to 1500 rounds per minute. Instructions. Short video after the jump.
So I recommend you go with either USB or RC and not both. Either way after doing some testing and tuning we were able to get our gun up to about 1500 rounds per minute. Or about 25 rounds a second using these cheap guns. I was let informed by a fan that there are electric airsoft guns that will shoot up to 1100 round a minute by their self’s