I have one. I knew I was buying a slide, barrel and frame. The MIM parts got thrown out, and replaced by Ed Brown stuff. Magazine got trashed, replaced by Wilson, and no problems. In fact, the gun is a REAL tack driver.
The lips on the original Kimber magazine flared out, and, when I put it a Detonics, it locked the gun up, but good. Trashed it.
Also replaced the springs with Wolffe stiffer stuff. Jack Huntington Advanced Gunsmithing went through the entire gun, trigger, ramp, etc. It was flawless from day one.
When I got done, I had a custom 1911 that drives tacks, for under 1100 dollars. Forgot we added a Sprinco guide rod as well.