The piston head is made by RETRO ARMS and the body is made of EN AW7075 with a rubber damper built in.
When combined with the company's CNC Cylinder Head, it becomes possible to efficiently absorb piston impacts.
The weight of the piston head and O-ring is 5.6g.
The thrust bearing and all the fixing screws together weigh 10.9g.
*Note*
The color of the anodized aluminum may change from black to red depending on the batch.
There is no difference in performance.