JBU Hop Up Bucking and Spacer
JBU's Hop Up Bucking and Spacer will improve your AEG's performance by giving you a far more consistent and responsive back spin on your BB. Better back spin means more range, more range means more eliminations.
- Comes with both bucking and spacer
- Quality replacement part
- Offers more consistent back spin on BBs
- Fits most hop up units