A good friend, actually the same friend that I just bought the slab sided Model 657 from offered me this Model 16-4 for a brother to brother price. I was feeling bad about how low the price was and then when I went to pick it up he left the Allchin mount and Fastfire III on it to boot. I will find some way to repay his kindness in the future. The caveat to the low low price is the finish on this gun. It has more than a few flaws that a previous owner tried to sand out. On the plus side now I won’t feel bad about reaming it to .327 Federal.