We get to learn more about the 4UAD Friction Pro Bucking if it could improve performance of a badly conditioned airsoft gun, be it an AEG or a GBB. According to them, the Friction Pro hop-up bucking boasts a unique, single-point design with a specially shaped contact patch. This grips even heavy BBs (up to 0.48g) firmly for a perfect spin, minimizing contact area for error-free shots and that players can expect a consistently flat and accurate trajectory.