Version 3 Gearbox Aluminum Cylinder Head

The Action Army Ver. 3 Cylinder Head is made from high quality Aluminum and is designed to fit the Ver. 3 gearbox. The Action Army series of upgrade parts are compatible with most major brands of AEG such as Tokyo Marui G&G ICS VFC KWA H&K JG SRC UMAREX Class Army Echo 1, Etc. Action Army is providing a cylinder head with 2 o-rings instead of just one. The extra o-ring provides a much better airseal onthe cylinder for maximum airseal compression.

• Flat large bottom rubber mat made out of high quality rubber.
• Double O-ring for maximum air seal and FPS output.