The High Cycle series from Marui has an above-average rate of fire of 1500 BBs / minute (with an 8.4V battery).
Gearbox: Version 2
Motor: Long Type (EG3000 High Cycle)
Material: ABS plastic
Magazine capacity: 500 (6mm)
Inner barrel length: 208mm
Muzzle thread: without thread
Muzzle velocity: 260-280 FPS / 0.63-0.73 Joule