I've already broken two nice punches trying to remove the old tube. at this point i feel trying to remove the old tube will just result in damage to it.
I get it but its just kind of frustrating that smith doesn't have any to purchase for so long. Also all the different types of AR10s makes figuring out what works with what a nightmare.
From the roll pin hole to the end of the tube it is roughly 11 7/8 inches maybe a bit under