Tokyo Marui Piston Assemble For HK416D NGRS AEG Airsoft

Tokyo Marui Piston Assemble For HK416D NGRS AEG Airsoft Polymer Construction Airsoft Piston With 1 Steel Teeth & Steel Spring Design For Replace the Original Airsoft Internal Parts Suitable For Tokyo Marui HK416D NGRS Electric AEG Airsoft Rifles