FPS ZERO-SHOCK Piston with Metallic Teeth

FPS Airsoft presents the first piston with a 100% technopolymer body and metal teeth made in Italy.

The piston material chosen is reinforced technopolymer, a material with high mechanical performance and very low friction coefficient.

The teeth were manufactured using Metal Injection Molding technology because this production process guarantees dimensional precision and resistance equal to those of solid machining.

The innovation is represented by the second missing tooth and with the third one already lowered by 3 tenths of a millimeter, as this configuration predisposes the piston itself for a correct angle of engagement (AOE) and makes it suitable for high speeds.

The type of injected metal is SAE 4650 + HRC38-42 which is currently considered the best material on the market for this type of use.

The sliding guides are designed to minimize friction and retain lubricant for a long period. The wheels are offset to favor the coupling between the piston teeth and those of the sector gear.

The longitudinal reinforcements on the sides of the teeth increase the robustness of the piston and prevent the rack from contacting the inner wall of the cylinder.

The special ribs reduce the contact area between the spring and the inside of the piston body, thus reducing friction between metal and technopolymer during contraction and elongation due to the firing cycle. 100% MADE IN ITALY 100% COMPATIBLE MARU