Hi,
I also performed the old 'Thor' test to see how the action behaved. a small piece of paper tape is placed over the area where the rear toggle link strikes the frame. If the tape remains intact, recoil is too soft. If the tape dents somewhat but doesn't tear, recoil is perfect. If the tape tears then recoil is too hard. It's not exactly rocket science but it does give a very good idea about general performance.
No problems whatsoever. Recoil was surprisingly soft, slightly dented paper tape. The test subject was a 1937 S/42 with a relatively fresh spring set (some 5 years old), combined with a MecGar magazine.
Therefore my conclusions mentioned above.
The conclusion remains 'fit for a luger'
