Retro Arms Piston 14.5 Half Steel Teeth NGRS



The Retro Arms Piston 14.5 Half Steel Teeth NGRS is a high-quality upgrade piston for AEG gearboxes, designed for players who want to combine reliability, durability and consistent performance with a lightweight design. This piston is part of the NGRS (Next Generation Reinforced System) series and offers an effective balance between strength and smoothness thanks to its 14.5 half steel teeth.
Material and mounting
The piston is made of durable polymers with reinforced sections and 14.5 steel teeth on the front half. The use of half steel teeth reduces the load on the sector gear before the metal teeth engage, while the steel teeth at the main contact points ensure excellent wear resistance. This design reduces wear and extends the life of the internal components in high-stress builds.
Thanks to CNC manufacturing and tight tolerances, this piston fits smoothly into compatible AEG gearboxes and works in harmony with high-quality cylinder heads and sector gears.
Usage and compatibility
The Retro Arms Piston 14.5 Half Steel Teeth NGRS is intended for use in standard AEG gearboxes that are suitable for pistons with 14.5 teeth. This piston performs well in builds with increased spring pressures (e.g. M120 and higher) and high-torque motors, where plastic teeth often show premature wear. The half steel design keeps the weight relatively low, which benefits the overall efficiency and responsiveness of the gearbox.
For optimum performance, installation with correct shimming, a well-shimmed sector gear set and a suitable cylinder head setup is recommended.
Key features
• Half steel teeth (14.5) for durable power transfer
• NGRS series piston design with reinforced construction
• Polymer body with metal teeth at critical points
• Suitable for high-stress and high-torque AEG builds
Safety and recommendations
Always check the compatibility of the piston with your gearbox before installing. Ensure correct shimming of gears to optimise tooth contact patterns and prevent unnecessary friction. Use a spring configuration that suits your build goal; springs that are too strong without the correct setup can put extra strain on internal components.
Why choose Retro Arms Piston 14.5 Half Steel Teeth NGRS?
The Retro Arms Piston 14.5 Half Steel Teeth NGRS offers an excellent upgrade for airsoft builds where durability and performance must go hand in hand. Thanks to the combination of half steel teeth and NGRS reinforcement, you benefit from improved wear resistance without adding unnecessary weight. For AEG players who play frequently or seek higher performance while maintaining reliability, this is a high-quality choice.
Frequently asked questions
What does "half steel teeth" mean?
Half steel teeth means that only the front half of the piston is equipped with steel teeth, reducing wear in critical areas while keeping the weight lower than with a full steel piston.
Is this piston suitable for high-stress builds?
Yes, thanks to the NGRS design and the steel teeth on the main contact points, this piston is highly suitable for high-stress and high-torque applications.
Do I need to modify the gearbox for installation?
It is important to shim the gearbox correctly and combine it with quality gears and cylinder heads for consistent performance and long service life.
With the Retro Arms Piston 14.5 Half Steel Teeth NGRS, you can give your AEG gearbox a durable, efficient and performance-oriented upgrade.

Product specifications
- Article number
- 12465500000
- Weight
- 25
- Weight unpackaged
- 23gr
- Brand
- Retro Arms
- Type
- Piston 14.5 Half Steel Teeth NGRS














