I've got a Saginaw S'G' and a Quality Hardware. The Q H was loaned to the German police after the war. Then the German police loaned it to the Austrians who returned it to the US Army. The Army then gave it to the Civilian Marksmanship who in turn sold it to me. That little carbine is in great shape!
One thing you have to watch out for, new made carbines being sold as WWII issue. Cabelas here in Grandville, Mi. had one in their Gun Library last summer. If you want an original go online and get a list of the WWII manufacturers.
Good luck and happy hunting.