Hi everyone. I recently went to visit my grandfather. We went shooting, and he had a gun I really liked, but I can't seem to find it on sig's website. The box said that it was a p220, but the 220's on the website don't look anything like it. The gun had wooden grips, and the back of the slide was rounded out. It was blued, and in 45 acp. It was a single stack, and I want to say that it was an 8 + 1. I can't figure out exactly what it was. It could be an older model. I think he said he's had it since the eighties. This is the first automatic that I've ever really liked. At seven yards my first two shots were in the 8 ring, and my next three were in the bulls eye. It was crazy! So, anyone have any ideas? Thanks in advance!