WII Tech - NGRS M4 - Enhanced Half Teeth Piston

Features: Injection molded polymer construction Half rack design First 5 steel teeth for longevity Drop-in design requires little to no modification Part Number EMG-112417 Material Polymer body, metal teeth Color Black Manufacturer Wii Tech Compatibility Next Generation Recoil Shock M4 Series AEG DISCLAIMER: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.