Optimise the performance of your Retroarms hop-up chamber with this specialist TDC R-hop trolley and M-nub set by Airtech Studios. Developed specifically for use with Retroarms hop-up chambers, this combination offers greater hop pressure consistency and smoother BB trajectory control.
- Compatible with Retroarms hop-up chambers
- TDC R-hop trolley improves adjustment precision
- Includes M-nub for even pressure distribution
Ideal for those seeking repeatable hop-up adjustment in demanding settings.

























