First off, let me say you get what you pay for, I know that now. I'm some what dissapointed with the gun. I've had problems with the gas systems and its failure to push the bolt back and eject a shell sometimes even when the regulator is at 0. Well lately I noticed that the gas tube comes loose up by the front sight post and when I make it tight again , the 2 slots that are at the front end don't line up with the holes that are in the regulator, But it throws the emptys out like you would'nt believe, so would it be a good idea to locktite it shut that way so it would not open up again ,or dou you guys see problems with that idea like excessive wear? Also how accurate should this gun be, it seems like I can only get 3-4 inch grouping at about 60 yards with a scope, I'm using FN and IMI ammo from the early 70's. If the barrel was not torqued enough the groupings would be worse than that right?