• Maple Leaf WONDER Series hop-up rubber
• This is an updated version for the Autobot bucking, designed for heavier BB's
• High hardness with new design pressure points, provides good accuracy with superior RANGE
• Fits all VFC/UMAREX GBB, Marui/WE/KJW GBB, VSR-10 sniper rifle as well as WE GBBR series

Please note this hop-up rubber lacks the tab on the side, making it compatible with more brands of gas guns. Please take extra care to align the barrel during install.