I'm looking from the perspective of, what could be undone if you moved to a free state, wanted to sell out of state, or AWBs were declared unconstitutional by SCOTUS. You could potentially swap out the MR2 for standard lower parts. The Bayo lug is useful if you want to put a Bayo on it. : ). I would also prefer a flash hider to a brake, or the ability to swap out parts. Can't put a bayo lug back on, and I hear unpinning a brake is not easy.