Once upon a time, he did write (or had a ghost writer write) that he was in favor of some sort of gun control.
Before he was a presidential contender, he called out Republicans who “walk the NRA line†and “refuse even limited restrictions†on firearms laws, in his 2000 book, The America We Deserve.
“I generally oppose gun control, but I support the ban on assault weapons and I also support a slightly longer waiting period to purchase a gun,†he wrote.
So, it would not be out of the realm of possibility that he could go back to this original view.
I guess we will know soon enough.