If it was shipped as you mentioned it would have been done as an "other", completely legal to reconfigure into a pistol. If you ever visit ar15.com they have industry forum and PSA is a member and will respond fairly quickly. eta: it's not a rifle until a fully assembled upper is installed and I am sure by your description that you never installed an upper on it.
Funny I just realized that tomorrow was the day I ordered the parts for my first ar pistol 15 years ago, seems like a lifetime ago.
Funny I just realized that tomorrow was the day I ordered the parts for my first ar pistol 15 years ago, seems like a lifetime ago.

