MarkH,
Is right, it was not attached to the gun, the revolver just sits in the fixture. Yes Freedom Arms did make the one that was pictured with the 18" barreled revolver. I have one that lives in the factory Freedom Arms marked box with instructions. They are very rare, and I have seen them sell for $200.00 with out the factory box and paper work. Dick Casull was sellimg them back in his days with Rocky Mountain Arms in the late 1970's. The brochure I have shows them for sale from Rocky Mountain Arms for $29.95 if I remember right. To bad the the revolver with 18" barrel had fixed sights. It would have been fun to shoot with a scope mounted on it.