Complete ebb gearbox V2

Features of v.2 HYBRiD Gearbox:
* quick change spring system
* spring 110 m/s (370 fps)
* polished and buffed surface skeleton of gearbox with corrosion protection
* steel gears
* 8mm steel ball-bearing
* bearing directional piston head
* cylinder type 1 with hole
* sealed aluminum nozzle
* bearing spring guide has 4 locking legs instead of 2 which extra secure spring while shooting
* electric blow-back
* complete wiring and a trigger