Originally Posted by Retired Squid
The top one is the latest model with improved slide like the one I had about two years ago, and the lower one looks like the 8 or 10 year old gun a buddy has two of with sequential serial numbers in 38 Super also blued.
No, the top one is a gun I bought used 6 years ago.
The bottom is from a thread that was posted on another forum a few days ago.
Not sure what it was you owned but the older full-size Witness's had square slides and at some point in the last couple of years they've switched to a thinner "contoured" slide which has been having cracking issues.
Perhaps they were using contoured slides 8 or 10 years ago and went to square slides, but whatever the case they're back to using contoured slides on their latest models and are having problems at least with the 10mm's anyway.