Nobody mentioned the Sterlings...Check this site out and scroll down the entire page...They have several models of the Sterlings in carbine configs and a generic Uzi carbine near the bottom of the page: Classic Arms Inc.
I hadn't given any thought to the Uzi. This might be a question better suited to the NFA section of the forums, but I'm going to ask. Which Uzi should I go with to avoid the NFA stamp? Looks like none of them have a long enough barrel (maximum barrel length 10.25 inches) or overall length (length with stock extended 25.5 inches) to avoid the SBR classification. But it looks like the Mini Uzi, and Micro Uzi might qualify as a pistol (correct me if I'm wrong). The official site (Uzi.com) claims that the Mini Uzi, and Micro Uzi have folding stocks... but I can't see them. If they have folding stocks, that would qualify them as rifles, needing a NFA stamp, right? Would that leave me with only the Uzi pistol, which would defeat the purpose of having a 9mm RIFLE.
Sterling - you could shoot the stormtrooper gun
J&G Sales