I recently purchased another R9 (R3618) and I'm not sure of the model. I bought it through Gander last week and it arrived today. I was only able to briefly look it over as I live in Illinois and we have a 3 day waiting period to bring home. It is an all black model and I originally thought it was a Covert model, but it does not annotated on the slide. So my question is, how would I be able to tell if it's a SF model or one that was sent in for refinishing by the previous owner? Obviously not a lot of info, so I'll post some pics when I'm able to pick it up. I usually don't purchase sight unseen but I couldn't pass it up for $750. From what I observed, it came in original case, lock, spent casings, 1 mag and warranty card. Again, I'll have more info Friday. I had my first one sent in for MP3 finish and had to have one in black also! Thanks