Thought I would update this thread. I ended up with the carbine, and it is the real deal. The pictures do not do it justice. It was listed as "arsenal rework" in the ad. The seller thought that the punch mark on the receiver, in front of the rear sight, was an arsenal rework mark. That is why it was listed as such. She supplied me with about 150 pictures, more than enough information to take a chance with a 3 day inspection. It is definately a keeper! Dogleg hammer marks only, front sight has distinctive Rock ola staking (pin never removed). Nice even patina. Rock olas seem hard to figure out, I believe due to the low production #s and the chaos at the factory, according to Larry Ruth. Sure, the extractor and firing pin are not Rock ola, but I think I am going to leave it for now! A Rock ola was to be next years purchase, but sometimes you have to strike when the iron is hot!