hop up pakning maple leaf kwa ksc 75Hop up rubber with sealing grooves that seal more tightly in the hop up and increase the effect. Special Geometric pressure surface provides better hopup and increases precision. Fits KSC M4A1 KWA Magpul LM4 With 2012 Hopup chamber. This hopup rubber is made for KWA GBBs that shoot over 100 m s. NOTE: Due to the geometric hopup point, this hopup rubber is best suited for inner barrels with open hopup chambers.
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