SHS Polycarbonate 15 Teeth Piston for Systema / A&K M4 / M16 PTW Series

SHS Polycarbonate 15 Teeth Piston for Systema / A&K M4 / M16 PTW Series features: Essential part for upgrading your Airsoft AEG Polycarbonate Construction 15 Teeth Piston is the lightweight piston with high impact-durability Compatible with Systema / A&K M4 / M16 PTW Series Suitable for mainstream high-speed tune-up and has excellent operational characteristics The Grease grooves cut on the rail-guides keep it lubricated Reinforced piston provide extra duration during rapid & prolonged firing