Originally Posted by aa1911
I've dabbled with Essex arms also, built a commander with essex slide and frame. They make STI's stuff IIRC. both my slide and frame musta came outta the throw away box, both were pretty bad; the slide was machined crooked inside on the rails, the hole for the safety in the frame was way off inside, had to do hours and hours of cutting and fitting. But that's the exception apparantly, they do make good stuff (usually).
but any slide will work, there will be much fitting involved however. Slide/barrel/frame fit and lockup is the most crucial part of safety and function on the 1911.
You may want to double check your facts about Essex making parts for STI.
We don't need to be spreading the wrong info.