Maple Leaf Monster (Diamond) Hop Up Rubber 50 Degree for Marui / WE GBB & VSR-10
Basically describes the back spin trajectory of an BB pellets, by adjusting the Hop-Up to increase their range and accuracy
As the pellet shoots through this hop up bucking, the friction creates the spin, it tends to roll and backspin.
The "concave" shape bucking, it will provide you the best hop up effect ever and is made specifically for the Tokyo Marui / WE GBB & VSR-10