UNI-HOP RH50 Hop Up Bucking for GBB replicas

UNI-HOP RH50 Hop Up Bucking for GBB replicas

Features:

- Compatible with TM/KJW/VFC/WE replicas (new version requires a change of the inner barrel)
- Uniquely developed NVR material
- The inverted V-shaped contact point is intended to increase range and accuracy
- recommended to use 0.25g or heavier BBs