Plus, one could assume that by being a national park, the gubmint would foot the bill for all cleanup and restoration work. And as anyone who has driven past it or seen it can attest, it would need a butt-load of both.
While the thought of actually preserving the Colt heritage and its' ties to Hartford is laudable, the bill to the taxpayers for such a project will be monstrous, not unlike any other federal projext.