M-Etal GBB valve key - metal

Metal valve key for servicing gas cartridge valves. Adaptations for opening and tightening both upper and lower valves. Suitable for most common KWA/KSC/Marui/WE/WA compatible valves.

Since gas gun magazines always require periodic maintenance and thus removing the valves from the magazine, every gas gun owner should have a valve wrench like this. Using the wrong size screwdriver or similar will only damage the valves!