Madbull VSR Accelerator Hop Up Bucking (2 Pieces)
- A highly sought-after hop-up rubber set from Madbull.
- Specifically designed for the Echo 1 M28 and Tokyo Marui VSR-10.
- Should also fit the many clones of the Marui VSR.
- Set includes two rubbers that are red in colour.
- These rubbers also create a tight seal between the barrel and the hop-up unit to prevent air loss.