CYMA C.140 tuning kit for M24/VSR replicas

CYMA C.140 tuning set for M24/VSR replicas

Tuning kit for M24/VSR replicas. The kit includes:
- Steel spring
- Aluminium bearing spring guide
- Aluminium piston with o-ring
Aluminium parts made using CNC equipment.

The entire kit allows for power tuning of ~3J.