6.5 Grendel barrel Length?????

[depletedyourcranium]

It would seem that everyone everywhere including the ATF, would disagree with you.

The BATFE hasn't agreed or disagreed until they release an opinion specifically regarding the classifications of stripped AR15 lower receivers. To date they have not. Until then correct and incorrect, like you said, is semantic and hinges specifically on the meaning behind "originally" and "only".

As I see it, a stripped lower can never be "only" a rifle because it previously existed as a title 1 firearm. Albeit undefined, but it was "originally" transferred as an "other" which means it already was something "other" than a rifle from the start.

Again, semantics, but until the BATFE says otherwise my interpretation is at least as relevant as every other person on earth who disagrees with me, which is to say, totally irrelevant.