RUBBER HOP UP AUTOBOT YELLOW 60 FOR VSR AND GBB MAPLE LEAF (MPL-4971)

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 a diamond shape and mainly favors the shooting range.
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