Bunny Workshop just came up with a civilian version of the H&K UMP GBB. The civilian version is called the H&K USC and is marketed to the U.S. civilian firearms market where it is offered a semi-automatic, blowback carbine. The Bunny Custom H&K USC GBB is based on the VFC H&K UMP GBB with the fixed stock custom made and extended steel barrel. Looking at the photos, it looks like it still retains the full-auto mode.