That must have been along time ago, are you sure you are not thinking Wilson? Ed Brown uses no MIM parts. And they make all of their own parts. They only use one level of parts in all their guns, unlike Wilson, who uses one level of parts in some guns and another in others. Most people end up buying Ed Brown Slide stops when anything happens in their own piece such as Kimbers/Wilsons/Springfields/etc
From Ed Brown Web Sight:
Do Ed Brown handguns have any MIM (metal injection molded) parts?
No, we use no MIM parts in Ed Brown firearms. While the current thinking is that MIM parts are "good enough" for firearm applications, this thinking doesn't fit with our philosophy at all. All Ed Brown parts are made from either forgings, bar stock steel, or quality investment castings.
Chief