DELTA 70 BLACK HOP UP RUBBER FOR VSR AND GBB MAPLE LEAF (MPL-4979)

Ra-Tech HopUp bucking the trend for VSR sniper rifles and GBB pistols.
Slightly narrow inlet for better grip to get more power output
This is called Delta shape and mainly improves accuracy.
C-Clip to improve lip stiffness for additional sealing, but not required for use.
It depends on the user's needs.
Bucking is suitable for Marui / KJ GBB pistols and VSR-10 compatible harmonic shotguns