Perhaps this would be a good opportunity to bring the thread a little further fwd in time with a pair acquired in the last 2 years.

Shown below are a 4" Model 15-7 Serial BRC 8071 from app. 1994 (left) and a 6" Model 14-6 Serial CAZ 2932 from app. 1997 (right),
both were offered in 4", 6" and 8 3/8" lengths at times and IIRC both should have shipped with rubber grips ,
( no self respecting K-38 should be seen in public without proper wood stocks IMO).

Note the 14 and 15 model lines had the same revision changes from introduction until around 1988 , after that their revisions part ways.
Both revolvers have smooth combat triggers, are factory drilled and tapped for scope mount and have the new style rear site.

The 15-7 (left) would be the last year of the SB K grip frame and has the old style thumb piece,
The 14-6 (right) is a late production version with the new (then) MIM thumbpiece with RB frame and is supposed to have a MIM trigger (according to the SCSW ) although this one appears to be forged.


Neither have the old trigger stop slot and both have superb actions .


This brings us up to 1997 which is also about the end of the hammer mounted firing pin.