JustAnotherSnakeCult wrote:I’m starting to look into an SBS. If you SBS a Remington 870/Mossberg 500/590, are you registering the receiver like an AR or the whole gun? I’d like a shotgun with a 10/12 inch barrel, 14/16 inch barrel and 20+ inch barrel. Is this legal or do I have to have 3 separate guns?
Per NFA the reciever is the registered item. With a SBR you can put any other caliber or barrel length you want on the receiver HOWEVER it must be able to be returned to the NFA configuration.
Ex: You have a 7.5" SBR AR-15, you want a 10.5" AR upper in 300BO, no problem, swap it out because you can return it to the registered NFA confirguration. I spoke with a ATF agent and he said you should but ARE NOT required to send in a letter advising them of any and all configurations that gun maybe configured in. You can also put a non-NFA upper an NFA lower.
Further example: You have an AK with a 12.5" brl. You want to have a 7" brl. You may not do this because the brl would be permanently attached therefore a violation of the NFA laws.
Now, to discuss your question, if you register the shotgun as an SBS and can change the brls with out permanently modifiing the shotgun, you can change the brl to what ever length you want. NOTE: You may do this with an AOW. An AOW is a very specific configuration and must stay in a AOW configuration. That stated for some reason you want to have a different length, you may as long as it stays in a AOW config.
EX: You register a Rem 870 with a 10" brl. You want to hunt pigs with a 14.5" brl, you may because you can return it to the 10" brl. Same goes for the 20" brl. Changing the mag tube maybe an sticking point, call the ATF for clarification.

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