Using this DX Gamagama Gun and Aoninger - style shuriken is easy. First, make sure the gun is loaded properly. Point the gun in a safe direction before firing. When using the shuriken, hold it carefully by the edges. Always use them in a spacious and safe area, away from people and fragile items. For maintenance, keep the gun clean and dry. Wipe it down after each use. Store the shuriken in a safe place to avoid damage.