SBR Question

[RCCrawler]

Just sent in the paperwork to make my 15-22 into an SBR, so I have filled out the forms once and am familiar with the process.

Wanting to do another SBR with an AR lower. On the form 1 it asks for caliber, and I was told you cannot put "Multi" in there, it had to be a specific caliber.

I always see guys post that you should do your SBR on a "Real lower" as opposed to the 15-22 so you can switch calibers.

Now my question, if I register it with a .223 caliber, will I be able to switch it out at will to anything else? 9mm, 300 BLK, ect.

[O2HeN2]

Yes, any caliber, any barrel length.

O2

[RCCrawler]

Yes, any caliber, any barrel length.

O2

If this is true why do they ask for specific barrel lengths and specific calibers?

[275RLTW]

You only have to report permanent changes to the original reported configuration.

[asmo]

Now my question, if I register it with a .223 caliber, will I be able to switch it out at will to anything else? 9mm, 300 BLK, ect.

Yes as long as you keep a .223 upper around so it can be made readily available into the original configuration.

That said; I have an approved Form 1 with about 20 calibers listed on it - everything from .22LR to .338.

[O2HeN2]

If this is true why do they ask for specific barrel lengths and specific calibers?
Don't shoot the messenger, it's the ATF's rules. :) You have to list the configuration that you're making, you can't just make a generic SBR lower (no matter how much sense that would make). As someone mentioned, keep the original upper around, otherwise it's a permanent change which isn't a big deal, you just have to file paperwork declaring the change.

O2

[O2HeN2]

That said; I have an approved Form 1 with about 20 calibers listed on it - everything from .22LR to .338.
How long ago did you do this form1? Though I haven't checked personally (don't have the need), supposedly the ATF is no longer accepting a list of calibers.

O2

[asmo]

How long ago did you do this form1? Though I haven't checked personally (don't have the need), supposedly the ATF is no longer accepting a list of calibers.

O2

2 years ago or there abouts.