[ARCHIVED THREAD] - 9mm upper

Posted: 4/17/2013 5:24:32 PM EDT

I'm really digging the look of the ARAK uppers. What do y'all think the chances are of a 9mm or other caliber sbr upper being made in a piston upper? I think it would be great to have a folding or hk style collapsable stock on a 9mm or other short barreled upper.