ZERO-SHOCK Fps Airsoft Lightweight Carbon Piston PM03CF

Piston for airsoft replicas with body in technopolymer loaded with carbon fiber and rack with all metal teeth equipped with the patented ZERO-SHOCK system (PM04CF)

Fps is proud to present the first lightened piston with a body in carbon fiber reinforced technopolymer and rack with all metal teeth equipped with a patented 100% Made in Italy ZERO-SHOCK shock absorbing system.
This system patented by Fps allows to attenuate the stresses that the rack transmits to the piston body, making the assembly enormously more resistant and reliable than a normal piston. A technopolymer loaded with carbon fiber and the addition of a small percentage of elastomer has been studied for the body material, which confers high mechanical performances and a very low coefficient of friction.

The rack was manufactured through the use of MIM (Metal Injection Molding) technology since this production process guarantees dimensional accuracy and robustness practically equal to those of solid machining.
The rack has the second tooth missing and the third already lowered by 3 tenths of a millimeter, as this configuration prepares the piston itself for a correct engagement angle (AOE) and makes it suitable for high gust speed.
The type of metal injected is SAE 4650 surface treated with HRC38-42 ° hardening which is currently considered the best material on the market for this type of use.
The sliding guides are designed to minimize friction and hold the lubricant for a long period of time.
The rack seat is off-center to facilitate the coupling between the piston teeth and those of the sector gear.
The longitudinal reinforcements on the sides of the teeth increase the strength of the piston and avoid contact of the rack with the internal wall of the cylinder.
Special ribs decrease the contact surface between the spring and the internal part of the piston body and consequently the friction between metal and technopolymer during contraction and elongation due to the firing cycle is also decreased.

100% MADE IN ITALY