Modify AOE V2 Cylinder Head and Piston Set

Double O-ring cylinder head with 10-metal tooth piston with 2nd tooth removed
The bas on this cylinder head is made slightly taller to force proper angle of engagement of the gears with the piston teeth. This results in longer life and less downtime
Suitable for V2 Gearbox, will work with some brands of V3 AK gearbox (non-Marui V3 design)