The Action Army Ver. 2 Cylinder Head is made from high quality Aluminum and is designed to fit version 2 gearboxs.
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, Classic Army, Echo 1, et cetera.
Action Army is providing a cylinder head with 2 o-rings instead of just one. The extra o-ring provides a much better airseal on the 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.