Ian McCollum over at Forgotten Weapons and InRange TV brings up an interesting point. Kimber tooled up a new revolver with the intent of selling to California, a huge market for concealed carry despite the fact that CC is for all intents and purposes prohibited in many counties. Revolvers are exempt from the microstamping requirement because revolvers don't automatically eject the spent brass. However, it may mean that in order to appease the selection process, they may choose to include an internal lock (that crane screw looks a little suspicious, though no reviewer has yet made mention of an IL). Looking over the roster, however, I can't make much sense of it. The model 642-1 and -2 models are OK, but they don't seem to specify an SKU#, so it would seem to include models both with and without the IL. Maybe someone who is more familiar with the CA roster can shed some light on this.
CORRECTION: Sorry. After looking over the CA list of "Safe Guns," it appears that only the 642-2 SKU# 163810 (IL) is approved. I don't find the 642-2 SKU# 103810 (no lock) on the list. I apologize for any confusion. I should have sorted that out before posting. However, it is my decidedly uniformed opinion that for a revolver to be sold in CA, it looks like the revolver must have an IL.