Hello, my friend gave me this old Glock 19, it has no trades on it but i think it is a KWC / KWA glock 19. Serial Number COP471US which when googled appears to take me to pages with KWC/KWA Glock 19 info on it.
Basically the gun has this weird issue where the slide will not fully enter battery for some reason. you have to apply significant pressure, more than a few pounds to actually get the slide to travel fully forward. This causes issues where the hammer will light strike the magazine flow valve and the gun will not cycle.
Even with the return spring installed its not nearly enough force to push the slide into the forward position resulting in the issue described above. I have attached images of the gun showing the issue. Any idea what is causing this? I think it may be an incorrect nozzle in the gun?
A video demonstrating the issue: https://streamable.com/kudgqc