Citation please. 

The only thing I can find that even comes close is Gorsuch's repeated reference to the Heller case as a means of avoiding the need to clearly outline his views during his confirmation hearings.  

The Heller ruling said in part "the sorts of weapons protected are those “in common use at the time” finds support in the historical tradition of prohibiting the carrying of dangerous and unusual weapons. Pp. 54–56.“

Since Gorsuch is an originalist would he also limit them to powder loading long rifles without rifling?