Upgrade plunger head for the JM gen 8 gearbox. Improve the seal, performance and quietness of your blaster. Should be used in conjunction with FB CNC Nylon Plunger Rod with Metal...
Maxx CNC Alloy Double O-ring Ball Bearing AEG Piston Head Compatible with most aeg gearboxes Assists in firing consistent fps with every shot Ported piston head design enhances compression Lightweight...