Nine Ball Air Seal Cylinder for Tokyo Marui MP7A1

Nine Ball Air Seal Cylinder for Tokyo Marui MP7A1 Metal Construction Coated with a layer of Teflon ( Teflon has the lowest coefficient of friction of any known solid material ) Tapered front section for keeping air-tight Suitable For Tokyo Marui MP7A1 Series Airsoft Rifle As always, upgrading GBB require necessary skill & technique, consult expertise if needed