The RetroArms CNC Piston 19 Steel Teeth (SR25 Gearbox) is a high-durability, precision-engineered piston made specifically for SR25 and extended-length AEG gearboxes. Built for long-stroke DMR systems, it features a full rack of 19 CNC-machined steel teeth designed to handle higher stress, longer travel, and stronger springs commonly used in designated marksman builds.
Its reinforced polymer body combined with a steel tooth rack ensures exceptional strength, smooth engagement, and long-term reliability — perfect for high-power tuning, precision long-range setups, and demanding SR25 platforms.
Features
- Designed specifically for SR25 / long-type AEG gearboxes
- Full 19 CNC steel teeth for maximum durability and wear resistance
- Reinforced polymer body with CNC-machined steel rack
- Ideal for DMR builds, M140+ springs, and long-stroke configurations
- Ensures smooth sector gear engagement and stable operation
- Suitable for high-torque, high-stress, and precision-tuned gearboxes
Specifications
- Material: Reinforced Polymer + CNC Steel Teeth
- Teeth Count: 19 steel teeth
- Compatibility: SR25 / extended gearbox platforms (not V2/V3)
- Weight: Approx. 22g
- Brand: RetroArms
- Origin: Czech Republic
What’s Included
- 1x RetroArms CNC Piston 19 Steel Teeth (SR25 Gearbox)
Important Notes
- Not compatible with standard V2 or V3 gearboxes.
- Professional installation and proper AOE tuning recommended for long-stroke setups.
- Ensure compatibility with your cylinder, sector gear, and SR25-length gearbox shell.
Disclaimer
⚠️ This product is an upgrade part intended for toys only. Not for real firearms.
