Description
The FPS PM01 is a lightened, high‑performance AEG piston engineered for players who want durability, speed and long‑term reliability inside their gearbox. Built with a reinforced POM‑C technopolymer body and a full metal rack, this piston delivers exceptional strength while keeping friction and weight to a minimum.
The metal rack is produced using MIM (Metal Injection Molding) technology, ensuring outstanding dimensional precision and strength comparable to solid‑machined components. FPS uses SAE 4650 steel, one of the best materials available for high‑stress piston racks.
Designed for performance builds, the PM01 features:
- Second tooth removed & third tooth pre‑lowered for optimal AOE (Angle of Engagement)
- Low‑friction sliding guides that retain lubricant longer
- Decentralised rack seat for improved gear engagement
- Reinforced side ribs to prevent cylinder wall contact
- Internal ribs that reduce spring friction during compression
Lightweight, efficient and built to last, the PM01 is ideal for high‑speed and high‑cycle setups. As always, it’s 100% Made in Italy and 100% Marui‑compatible, making it a reliable drop‑in upgrade for any AEG.
Weight: 15.2 g
Material: POM‑C technopolymer + full metal rack (SAE 4650 steel)
Compatibility: Marui‑spec AEGs
Origin: Made in Italy





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