So I found this post interesting enough that I got out of my chair, went to the basement, opened the safe and took a look. 317 and 442-1 has bevel, model 36 does not. What a waste of three minutes. OCD anyone?
After reading through the posts, it seems there is some confusion about what the OP is asking about. I hope I am correct in my interpretation as to his question. I believe I have highlighted the area in question on the frame.
Mckenny99, yes that's it, it's there on newer aluminum frames. It's supposed to be. A clean gun will show it is done on purpose. I'm not losing sleep over why. What if the guy that came up with that modification has died, without notes. OMG.