Tightbore barrel

So I'm looking to get a tightbore barrel for my utg m324, as even with .3g bbs it seems to still hook up while shooting. I was wondering what barrels would work? I took it apart and looked at it and it looks fairly generic, but I have no way of being sure that any barrel I get will work for sure. Does anyone know of any barrels that I could use? thanks

Try tuning the hop up first. But if you want to try a tighter bore, go with a 6.03. 6.01s or bore barrels put a massive amount of friction on the bb.

I meant like what brand should I get? For instance should I get one that's designed for a VSR10? I can't seem to find any specifically designed for a gen 5 324.I

That's because most guns use the same kind of barrel, just different lengths. The gun name on the name of the tightbore barrel is simply to tell users what gun it fits...

HOWEVER, most sniper rifle barrels are quite different than AEG barrels. That being said, I believe a VSR10 barrel would do the trick, but someone please confirm.