My guess is that he's against it, but he is also soft on crime, especially from the traditionally disadvantaged classes, because of his economic/Marxian view of just about everything. That gives you a double whammy: stricter regulation of the law abiding, but easy treatment of gun using criminals.
Of course, he'll obfuscate that position by talking about hunters, and since Heller (but not before) self-defense, but that's while the election is still in doubt.
Come November, it is imperative that he be kept out of the WH. Here’s hoping something dramatic will happen to turn the tide. ;)