I would like to build a pistol like the one in the picture.
I would like to use the billet lower bought in Group buy, it was transferred to me as "OTHER".
What would I have to do to make this legal for me to build and have? -
I am having a unusual hard time finding laws (state and fed) on this.

sure would appreciate some information on this.

TIA
Brian

Your good to go, as long as it wasn't transferred as RIFLE

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Virgin stripped receivers cannot be "rifles", used receivers could potentially be however. With a new unbuilt receiver, even if it was incorrectly marked on the 4473 it's still not a rifle, its an "other" until its assembled.

Just like a shoulder stocked 870 is not a "handgun" even if the 4473 says it is and the FFL even filled out the DOL pistol trasnfer form and mailed it in. It's still a shotgun as defined by Fed and State law.

As for the OP, buy a pistol buffer tube or modify a standard carbine buffer tube to mount the SB15 Sig brace on and purchase or build a 7.5"-11.5" barreled upper and assemble them. And you're good to go, as long as it doesnt have an ACTUAL stock on it.

Build away . . . you're good to go.

Like NWRed said, just don't put a rifle stock on it.

Even if the receiver is stocked when you buy it, it is still an other, until it is a complete firearm.

So any lower can become a pistol, it is just never anything until it is complete and you dub it "rifle", "pistol", or "firearm".

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Is there a maximum overall length in WA? I am modding out a PAP M92 AK pistol and am going put a SB47 brace on it. With the brace I think it will exceed 26" but will still be only a 10" barrel. Need clarification if there are any WA statutes that govern this. I think I am good to go under federal law. Please advise.

Nice gun Nitefire1.

No maximum oal

Pistol's by State definition have a barrel of less than 16" or are designed to be fired with one hand.
With the sig brace on there you could put a 24" barrel on it and still be good.

Re: pistol/rifle/other
Pretty sure Thompson v US makes the use of any lower viable for use. It just has to be complete as that one designation at any given time. You can't use a pistol upper at the same time you use a lower configured as a rifle... As this would make an SBR.
Only hang up to this is if the lower is physically marked as a Pistol.

If you were to use a 16" barrel... It would never matter, as that would be legal in any configuration.

Or a vertical foregrip.

Don't worry, no stock or forward vertical hand grip. That was something I already knew, just needed to check on OAL. Not even sure I would put the Magpul Angled Fore Grip on it, as that is still considered legal.

Newb question, but what if I buy a stripped lower in a private sale. What is that classified as? Can I do whatever I want with it, or does it matter what the original owner bought it as? Just curious. Thanks all.

It's legal to if the OAL is +26".

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Whatever the previous owner barreled it as.

A lower is an other until it has a barreled action. Once you barrel it, it becomes whatever you made.

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