CNC aluminium flat piston head with double O-ring FPS

Milled from aviation aluminium (ERGAL), anodized, with a special construction of the o-rings.
This is a piston head designed for high power and speed builds. The main o-ring is type
X-Ring, which retains the maximum amount of grease in itself and provides great
compression. The 8 holes are responsible for maximising even distribution of pressure on
the periphery of the head. The bearing at the rear of the structure ensures even voltage
distribution in the main spring during operation. A polymer washer allows you to properly
adjust the angle of attack. Made in Italy, by FPS Softair.