Product DescriptionThis parts are manufactured under CNC process, it improves:
1) strength of piston
2) durability of gears
3) smoothness of shooting with extreme high power
The safe working load (SWL) of the piston is 1.9J. 2 rubber rings are included. One rubber ring is used for standard T.Marui size gas cylinder. Another rubber ring is used for bore-up size gas cylinder and Wii Tech gas cylinder.
Material: Aluminium Piston and Steel Gear