Yeah I've used the vibra tite before. I didn't really like it, it's more like rubber cement when it dries. So the first nut goes on and the second nut secures the barrel to the first nut and the receiver? I've never seen that setup before, only one piece barrel nuts.It’s actually for the barrel nut. It’s called vibration-tite, I didn’t use it I just used aeroshell
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