It seems less likely, despite Dingy Harry being a pretty good supporter of the 2nd Amendment in the last decade. He also supported Sotomayor whose vote was also scored by the NRA.
NRA-PVF ENDORSEMENTS NOT YET ANNOUNCED IN ANY U.S. SENATE RACE FOR NOVEMBER GENERAL ELECTION
Harry Reid is no supporter of the Second Amendment. He’s running for re-election and he won’t get re-elected running as a anti-gun freak in the state of Nevada. That day at the LV gun range was a photo op.