Form 4 for an SBR registered with "multi" for caliber and barrel length?

I'm sure someone more knowledgeable will chime in but since new forms don't allow multi anymore I would think even if it was done previously you'll need to add a caliber. (This of course doesn't mean you're restricted to that caliber or that barrel length that you put down).

Is it an AR SBR? I would Just put 5.56 or .223. Like the other commentor said, you are not limited to that caliber.

I was told over the phone and in writing they will NOT allow multi or multiple to be used on any forms. I was asking specifically about a Form 1 but I would tend to think they are going to make you enter a specific caliber. Might as well do it now and not delay the process any longer waiting on a rejection letter and making corrections.

I did however put in a form 1 for an AK SBR and accidently only put "7.62" NOt 7.62X39. I assumed it would be rejected but it was actually approved.

I did however put in a form 1 for an AK SBR and accidently only put "7.62" NOt 7.62X39. I assumed it would be rejected but it was actually approved.

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Well, it does say "caliber" not "cartridge" or "chambering." So you're more precisely answering the question that way, than by defining a cartridge.

Sam1911 said:

Well, it does say "caliber" not "cartridge" or "chambering." So you're more precisely answering the question that way, than by defining a cartridge.

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Wow that's an excellent point. Not sure if it opens anything up but something to think about.

ATF just kicked a form 4 for a sear for the caliber being marked N/A, even though on the last form 3 it was marked N/A. Not sure how you can assign a caliber to a sear.

They do just want ".223", "5.56" etc and NOT "5.56x45" or "5.56 NATO".