CowCow Enhanced Piston Head Glock

Manufacturer: CowCow Technology SKU: CCT-TMG-008 Enhanced Piston Head for Air-Tightness. Designed to withstand high impact pressure. Stabilized Performance. Improved durability over marui piston head Drop-in upgrade part For marui original blow back unit For Marui G19 Gen3 and Gen4, V10, M&P9, M&P9 V-Custom, TM G17 Gen4