I would like to transform a shotgun I inherited from my dad into an SBS. It's an old pump 12ga from the 50's which isn't worth the cost of the stamp, however, it has sentimental value so I'd like to make it something I'll actually shoot/use rather than admire it from time to time.
Is the ATF Form 1 - Application to Make and Register a Firearm the correct form for doing this, and if so, is this the only document I need to submit?