Why do you say that? He may not be a perfect conservative, but don’t confuse him with his father, who was libertarian to the marrow. Rand definitely stands between his father and Reagan. The more issues that pass, the closer to Reagan he stands.
Give the guy some credit for trying to fight a massive majority (the Dims and the GOPe) pretty much on his own.
OnTheIssues.org is a nonpartisan organization that tracks candidates voting record and their answers to questionnaires etc, and rate them based only on the facts.
Not opinions, just the facts about their record.
They list him solidly in the Liberaltarian column.
You can go to the site and see it yourself, all the way at the bottom of the page.
You can also check every other House/Senate/POTUS candidate.