FPS ZERO‑SHOCK Lightened Full Metal Teeth PM04+ Piston – unmatched smoothness and durability
The PM03 piston features a Made in Italy technopolymer body reinforced with elastomers and full metal teeth crafted via MIM technology, achieving an ideal balance of weight savings and strength. Its patented ZERO‑SHOCK system absorbs the stresses from the rack, extending spring and piston life under heavy use, while the tooth design (second tooth omitted, third lowered by 0.3 mm) optimizes the angle of engagement for high‑speed cycles

Technical specifications & package contents

Body: Made in Italy technopolymer with elastomer additives

Teeth: SAE 4650 steel with HRC 38‑42 hardening, produced by Metal Injection Molding

Tooth configuration: second tooth removed, third lowered by 0.3 mm for optimal engagement angle

Internal guides to minimize friction and retain lubricant

Offset rack seat for perfect mesh with sector gear

Longitudinal side reinforcements to prevent cylinder wall contact

Internal ribs to reduce spring‑to‑piston friction throughout cycles

Weight: approx. 15 g

Compatibility: 100 % Marui compatible

Package includes: 1 × ZERO‑SHOCK PM04+ piston

With this piston you’ll experience smoother cycling, reduced wear, and significantly longer component life.

Warnings & compliance
Intended for use only in compatible electric softair replicas. Install carefully, maintaining proper hop‑up alignment and avoiding forced fitting. Keep out of reach of children. Avoid prolonged exposure to heat or humidity. Do not disassemble or tamper with the piston. Regularly inspect teeth, guides, and internal ribs for integrity. Compliant with GPSR Regulation and Italian PPE standards.