Restore compression and improve cycling with this complete, pre-greased piston assembly. The A-7 piston comes with billet aluminum piston head installed and fits all KM4s, VM4, RM4s, and the KWA TK.45 Series
Restore compression and improve cycling with this complete, pre-greased piston assembly. The A-7 piston comes with billet aluminum piston head installed and fits all KM4s, VM4, RM4s, and the KWA TK.45 Series
