Not a Carson fan, but he does support the 2nd amendment.
"Our founders did, however, recognize there was a possibility that an overbearing government, drunk with power, might not submit to the will of the people and might, in fact, employ the military to suppress the will of the people. This is one of the reasons why the 2nd amendment was added. ... They knew that an armed populace would be a powerful deterrent to the imposition of dictatorial powers." - Ben Carson "One Vote"
He certainly did himself no favors when discussing the topic. Even with his attempt to “clarify”, he couldn’t remove his foot entirely.
http://www.thebangswitch.com/dr-ben-carson-and-the-second-amendment/
http://libertycrier.com/ben-carson-tells-glenn-beck-2nd-amendment-right-depends-on-where-you-live/
http://www.newsmax.com/US/Ben-Carson-Second-Amendment-gun-rights-weapons/2014/11/20/id/608674/
In practice he doesn’t support the 2nd amendment, he can write the words, but speaking them from his heart, is something else.
“Dr. Benjamin Carson On Gun Control: “It Depends On Where You Live”
When asked by Glenn Beck if people should be allowed to own semi-automatic weapons, Dr. Benjamin Carson said: “It depends on where you live. I think if you live in the midst of a lot of people, and I’m afraid that that semi-automatic weapon is going to fall into the hands of a crazy person, I would rather you not have it.” (Glenn Beck Show, March 1, 2013)