[RickB]

A friend of mine has a Combat Commander that was cut down to approx. Officers size, with the DA conversion, adjustable rear sight, loaded-chamber indicator, and some other mods. Cool gun. I have a gun that I built on an ODI Viking frame, which is an investment cast frame with the Seecamp "conversion" molded in. When ODI folded, Essex ended up with the tooling, and are (at least a few years ago) still selling the frames and internal parts.
There are pics of Seecamp conversions at 1911.org:

http://www.m1911.org/full_models.htm

Scroll down, and click on "conversions".

 

[Tim Burke]

I've got one. Pretty neat, mechanically, but the geometry insures that the DA trigger pull will be heavy.