The original Tokyo Marui Model 18C was fun, but the parts would quickly wear down with the full automatic fire, and Dynamic Precision seemed to have a solution to that weakness. The new Enhanced Piston Head for Tokyo Marui Model 18C is constructed with a high density polymer and will provide better air seal and durability to the piston that delivers superior performance when used with other Dynamic Precision upgrade parts.
Disclaimer: All aftermarket upgrade parts require necessary skill or modification to install and assemble, please consult with your airsoft technician if needed.