I've watched some debates with Milo as well as Gavin Mcinnes. They are definitely not what most Americans would call "far-right" -- in that they aren't anti-gay, aren't anti-drugs, aren't socially conservative, and aren't particularly hawkish. They seem to dislike Republicans like Paul Ryan almost as much as Nancy Pelosi.
Milo recently did a profanity-laden pro-Trump rally dressed in drag. That's the "alt" -- it's quite different than what a person would typically call Republican.