Is this normal wear? (have pics)

[rb211]

As far as the barrel coming loose, find a thin o-ring that you can get on the barrel and that will stop it from loosening up. You want it fit tightly on the barrel. I had to do that on mine.

[Coralis]

teflon tape on the threads of the barrel will do the same but if you take the barrel off alot you will have to replace it often ..... works until you find a oring

[wanna-b-ballin']

i just stretched a barrel o-ring around the barrel threads for one of my guns. it works great.

[Vigilantrix]

I put a drop of red locktite on my barrel tkreads and let it sit an dry, no huge amount, but just enough to beef up the threads... works great, just give it a full 24 hours!

[RazorMonkey]

That's kind of silly, considering you could just stick an oring on there... But to each his own, I guess...