[Tech] Assembling a hammer (Glock, KJW KP13, WE GForce ...) GBB 6mm Airsoft/Softair 4K UHD

Hey everyone, since it was practically impossible to explain to Timo over Skype how to assemble the hammer unit of the KJW KP13, here's a short tech video. This can of course be applied to all compatible Glock GBB airsoft models (WE GForce, APS Dragonfly, etc.).