My barrel unscrews itself!!

[Oxbrain]

I'm having this problem where every 5-10 shots the barrel comes a bit loose and my shots start going everywhere.
It's got the o-ring there, but it seems too small.
Barrel is an evil pipe if that makes any difference.

[taso_winforce]

try putting 2 orings on it or putting 1 big one on there. mine comes loose too it just from all the bouncing around.

[Hoplon]

There are a coupe things you can try:

1)Go to a hardware store and buy a thicker oring
2)Wrap tape around the barrel in the grove to get the oring to stick out farther
3)Put teflon tape on the barrel threads.