The piston is a critical component inside your AEG’s gearbox, driven by the sector gear to cycle the piston and compress air for each shot. The half teeth design means that only part of the tooth rack is present — usually focusing on the section that engages most with the sector gear — which helps reduce unnecessary stress while still delivering reliable engagement. airsoftgi.com
This Element piston typically combines a polymer body for lightweight and smooth cycling with metal teeth on the rack for improved wear resistance and reduced risk of stripped teeth under normal use.
 
Key Features
Half Teeth Design: Only part of the piston’s tooth rack is present, sized to work well with many common gearsets — this can help with smoother engagement and reduced weight. airsoftgi.com
Metal Reinforced Teeth: Steel teeth where the gearbox sector gear contacts the piston help resist wear and tearing during extended use.
Durable Polymer Body: Lightweight yet strong body material promotes smoother cycling and reduces stress on other gearbox parts.
Improved Reliability: Metal teeth mean greater resistance to wear compared with all-plastic teeth — making it suitable for stock or moderately tuned power levels.
Versatile Compatibility: Designed for Version 7 gearboxes, but as with all internal components, you should verify compatibility with your specific rifle model before installation.