Quote Originally Posted by jpdown View Post
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It is best to use a pipe wrench to remove the smooth barrel nut the first time, since they are very hard to remove from the factory. You will need to get a slotted or smooth nut wrench to tighten the new replacement nut.
Good to know. I bought the Dick's Sporting Goods special 11VT and it also has the smooth nut. This question has always been in the back of my head. If I ever switched the barrel I would probably upgrade the barrel nut to a normal one.