Noob Question: SBR - Form 1

[HallisChalmers]

If you add a folding stock to a SA pistol (e.g. SWD M11), how should you depict the OAL on the Form 1 - with the stock FOLDED or EXTENDED?

This is my first SBR Form 1, so excuse me if its a stupid question.

Wiki says this:

Overall length is measured between the extreme ends of the gun, along a centerline which passes through the middle of the barrel. For rifles fitted with folding or telescoping stocks (such as U.S. Carbine M1A1), US Federal guidelines state that measurement is made with the stock unfolded as intended for use as a rifle; exception is made for rifles with easily detachable shoulder stocks, which shall be measured with shoulder stock detached. Some states such as California and Michigan measure overall length with the stock folded.

Short-barreled rifle - Wikipedia, the free encyclopedia

But, I'd be a fool to quote Wiki as a legal source. I've looked on the ATF website, but can't seem to come up with an answer.

 

[Renegade]

Stock Extended.

 

[HallisChalmers]

Thanks!