Dynamic Precision Hop-Up Rubber 70 Degree for Marui Hi-Capa and Glock Series GBB Pistols

Dynamic Precision Hop-Up Rubber 70 Degree for Marui Hi-Capa and Glock Series GBB Pistols 70 Degrees hardness for higher FPS builts Suitable For Tokyo Marui & Glock Series Airsoft Gas Blow Back GBB Pistol