Quite simply, they would rather be known at FR as anti-gun nuts, than admit that they are wrong on this issue. Weird fellas.
No these "facts" on both sides are just various legal opinions based on the interpretation of the 2nd amendment by various courts. The "facts" and history is that some states regulate the hell out of guns and some do not. That is "facts AND history". The Gun rights advocates in California have finally understood that and are now shifting their focus to amend the California State constitution. All they need are approx. 600,000 signatures to get it on the ballot. Now, tell me some more "facts and history".