Here's a funny one I found. I happened to be looking around at info on a Rough Rider .22 revolver, and came across their FAQ page on their site:
I thought this was odd. I personally don't have any guns "registered" to myself, per se, let alone registered by barrel length. Am I missing something here, or are they just full of it? Since when and in what locale does one need to re-serialize and register a handgun when they change a barrel length?7. Can I change my Rough Rider barrel to a different size barrel?
No, because your Rough Rider was registered to you with a certain barrel length and serial number. BATF maintains this information and it cannot be altered. If a barrel length is changed, then a new serial number and new registration must follow. This is a lengthy and costly procedure. We do not sell Barrels and Frames to consumers or dealers.