I was describing a real pistol tube for everyone who has forgotten what they look like, not saying that's what they are saying in the rule.That being said...upstream it was stated that just removing the brace alone changed the SBR back to a pistol. Now it's being stated that the buffer tube needs to be the original short tubes with the rounded end to be okay.
I was answering your question regarding the pistol buffer tubes that in real life are rifle/carbine tubes that have adjustability, ie holes or something, that people are putting hard plastic or metal braces that are really stocks.
I guess the best way to understand it is to read it. You all are getting second-hand info from me and one other dude here that read it.
here y'all go