Maple Leaf Super Hop Up Rubber for VSR & GBB-70 Compatible with Marui, WE, and KJ GBB pistols, WE GBBRs, and VSR-10 air cocking rifles. Features a slightly narrowed entrance for improved sealing and consistent power output, paired with a reinforced C-Clip lip for enhanced stiffness. The specialised pressure point geometry minimises shot-to-shot inconsistency, delivering more predictable trajectory performance. Optimised for open-type hop up slots found on Marui original pistol inner barrels and most compatible alternatives. Recommended hardness and FPS ranges: 50°: Up to 360 FPS 60°: 295–390 FPS 70°: 360–460 FPS 75°: 425–490 FPS 80°: 490 FPS+ Upgrade your airsoft platform's accuracy and reliability with precision-engineered hop up performance.