AOSC Forum Archive

I have the KWA ATP V2. Here recently it will lock the slide back with a round remaining in the magazine. It's not a gas issue ( I believe ) because I can load it back up and still get 1-2 more magazines out of it.

Any ideas what would cause this?

I had the same problem with my WE M9. I think it was that the slide release would lock the slide back because the vibrations of firing the gun caused the side release to be pushed up.