Product: Action Army Hop Up Bucking Fit with Marui VSR10 /G-Spec, JG BAR10, HFC VSR11 Made in Taiwan
Brand: Action Army
This Hop Up Bucking is a great upgrade to ensure a better air seal and proper backspin on the BB during flight. The material used on this hop bucking is called "HNBR". Here is a short description on HNBR, Hydrogenated nitrile rubber (HNBR) is a viable alternative to polychloroprene for many automotive applications such as timing belts, seals and hoses. It has excellent mechanical, thermo-oxidative and chemical resistant properties and an excellent operating temperature range. Fit with Marui VSR10/G-Spec,JG BAR10,HFC VSR11,Marui pistol, SOCOM Gear R700
Rubber
Design: TM VSR-10 (Including G-Spec), JG BAR-10 (Including G-Spec), HFC VSR-11
Made in Taiwan

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