Just got my uzi 22 and had it to the range. It was a joy to shoot the sights were right on at 25 yards and it ate everything I fed it.
$579 was a little much but I'm glad I got it.
It could be. It would be a little more work than SBR'ing a 9mm Uzi, but it could be done. Walter sells a short barreled version in Europe where they don't have length restrictions.
The barrel can be removed from the receiver fairly easily. Then you could cut it to length. The end would have to be retreaded so the retainer nut could be reinstalled. Then you would want to make a new barrel sleeve that looked like a 9mm barrel instead of a suppressor. The sleeve would look like the one they put on the pistol version of the gun, only a little longer.