It becomes a one-shot jamo-matic, the way the semi versions are designed to be; as the bolt carrier tries to return to battery, the nose of the hammer will catch on the lip on the underside of the bolt carrier, leaving you with a round partially chambered and no way to do anything with the rifle until you drop the mag, work the action, re-insert the mag, work the action again, and then you'll be ready to do exactly the same thing over again.