The National Review is reporting today that an American Conservative Union insider said Gov. Chris Christie was not invited to CPAC because of his stance on guns. 

Christie has not embraced the conservative movement's hard line against gun control and earlier this year took aim at the powerful National Rifle Association over an ad that questioned Secret Service protection for the president's children.

The insider told the Review that Christie, who is among the names most often mentioned as a 2016 presidential contender, has a "limited future" with the Republican Party.

Christie is not a Republican in the eyes of conservatives, the source told the National Review.

Christie was snubbed by the ACU on an invite to the annual conservative conference, setting off speculation that the move was payback for Christie's embrace of President Obama in the waning days of the presidential campaign.  Christie praised Obama for his handling of Super Storm Sandy, leading some conservatives to criticize him as a sellout.

Christie has not addressed the missing invite, however being outside the conservative movement hardly hurts Christie as he embarks on his re-election bid.  

Meanwhile, Buzzfeed has this report on five people who are set to appear at CPAC who have less future among the GOP than Christie.