Random problem today on my TM G17....
Was shooting in my basement. Things were fine. I switched mags, shot 3 shots and the slide didn't return properly. It did this multiple times. I removed the slide and the barrel and noticed that the nozzle part isn't returning on its own anymore... I checked the sprint and everything looks fine.
Any ideas? I can try and post video for everyone to see what I mean.
Edit: Nevermind... seems it just needed a little silicone oil.
ops: