Board Thread:Bug Reports/@comment-32601667-20180709070522/@comment-32601667-20180709160938

I suppose Noob buster gets triggered when an user deals damage when they equip the gun too fast, or some sort of that... The system thinks they didn't equip anything,however they still deal damage, so it kicks them. That's my theory.

This explains why BelowNatural announced that you can equip any item every 0.3 seconds, to prevent disconnection, but it reduced the chances only to get caught by the system.