heard of -- 1911s only
I have 'heard of' every brand breaking 'something', to include Wilson, Brown, and Baer.
The ONLY parts failure I've personally observed on a 1911 was recently seen; a Springfield Armory 1911 broke its hammer.
I have seen more Kimbers used than all other 1911 brands added together during my IPSC experience (competing since 1995) yet have never seen one break anything, nor heard of one breaking anything at any match I've attended.
I have, however, seen custom guns (no, a Wilson, Brown, or Baer is NOT a 'custom gun'; it is a well-made gun) break slide stops, and a goodly number shed sights.
I have held and/or examined numerous guns 'broken' (as in "All blowed up") by bad ammo, both factory and handloaded.
I have held and/or examined non-1911s that have cracked their slides or frames, hammers broken, and such.
But not 1911s.
As for recording Kimbers' broken parts, I simply would consider what they've changed on their guns over the years, because broken parts = warranty costs = bad business; anyone suggesting Kimber does 'bad business'?
NOT arguing; learning.....