The strength of PP Airsft BB is not high due to the hardness. It is difficult for PP air gun BB to adapt to the application of Airsft BB in high-strength occasions. The modification of PP Airsft BB is necessary.

The glass fiber modification technology of PP Airsft BB is mainly on the material. It can be completed by injection molding of PP material with glass fiber. However, the final polishing work of PP Airsft BB with glass fiber is very difficult because of the addition of glass. The structure of the fiber material has changed, and the surface will appear during polishing.The polishing must be polished with a special abrasive with high polishing hardness, so that the PP Airsft BB with glass fiber can be polished to a mirror effect.