The stainless upper has arrived at its destination and is presently undergoing examination...
Meanwhile, I am looking the frame over and noting more differences in construction. One such is the safety. It's not pinned like a P08 but rather is held in a slot in the frame by the spring tension of the lever itself. It can be removed by lifting the lever up and sliding it out of the slot. The safety bar has an extension that fits over the cut in the frame where the magazine slides. To keep it in alignment, I suppose.
Frame is marked with the manufacturer '
OFM CORP' [
Orimar Firearms Manufacturing].