Re: How to claim a firearm from a deceased brother
First you need to find out if your brother left a will, or anything indicating who the guns should go to. Next, if he died intestate (no will), are you the only heir or are there others who might be able to make a claim on the guns? And who, if anyone, is the executor of his estate? Is there one?
There are specific ways to handle the transfer of any firearm, but machine guns are special. IF and that's an unknown, IF you are the only living heir, or his will left them to you, you will need to file a Form 5 with BATFE for a tax-free transfer to you. I'd really suggest contacting a lawyer about this. It can get pretty messy fast.