I know, I know...it is a sickness....I can't help myself.
I saw this gun on another forum and decided I wanted to build one.
I won't be going the SBR route (unless of course they are removed from the NFA.. ).
The guy who built the one above used wood for the pistol grips and butt stock, I decided to use plastic for the pistol grips and aluminum for the butt stock
I'll adapt an AR or AK grip for the rear pistol grip
I'll install a picatinney rail and add a folding forward grip
I'll make the butt stock from aluminum tubing
I'll also make the butt pad from aluminum, but cover it with a flip flop for comfort
Free float the barrel and anchor the rear of the receiver using a bolt going through the stock and rear trigger pin hole.
Square off the stock and perhaps add some metal plates with bead rolls to the side of the stock to give it an "Uzi like" appearance?