Originally Posted by Mackay_Sagebrush
JWP,

Good Eye,

I don't know if it is a K Frame or J Frame, but it is an S&W rear sight milled into the top of the slide.




...

Definitely one of my favorite 1911s for carry.

[Linked Image from i.imgur.com]

Since I was in Grizzly country, I had it topped off with my 250 grain +P 45 ACP loads.

Are these factory or home cast bullets? Do you know about the brinell hardness?

Elmer Keith