Yes it's legal, "no illegal way to shoot a pistol" and all.
Mmmm depends on what is attached to it. Put a stock, or a device that can be utilized as a stock, to extend the grip far enough to allow that part of the pistol to be braced against your shoulder, and it "could" become illegal. IMNAL
Put a stock on it and it is no longer a pistol.
Isn't the interweb fun?
So much misinformation in this thread.
Yes it's legal, "no illegal way to shoot a pistol" and all.
Humm so this is ar style pistols only? I've not seen anything about the sb47 brace yet. I wouldn't see why it would be a big deal to shoulder the sb47 as it doesn't have a buffer tube to use as the ar style pistols do.
Same deal. Take a pistol, "any" pistol, and add an attachment with the ability/intent of the attachment being used to steady the pistol utilizing contact between the attachment and a persons shoulder, and you have just manufactured by intent or accident, an NFA regulated SBR.