Projects can be fun and get you what you want....
....snip...... Were/are there any "special" 610's that I should search or wait for?
If you want a "special" one you might just need to make it yourself.... I'm personally not aware of a PC version, but who knows.....
About 10 years back I was hankering for a nice M610, but the options were not of interest to me, i.e., unfluted, longer barrels, case colored parts.... etc.
When a buddy of mine located a "challenged" M610-1 I decided that it was time for another project.
The action had been worked on by a previous owner, it had issues (I've described it as "broken" before)... It also had a 6" barrel, case colored parts and an unfluted cylinder, so what the heck let's rebuild it to something I would like....
I rounded up flash chromed hammer and trigger (narrow trigger for DA shooting), had the cylinder fluted by SDM machining back east, called S&W to see if they had any 4" barrels (they did

)..... Also got Craig Spegel to make me a set of Cocobolo "short" RB to SB Targets with medallions....
Sent all the parts to the Performance Center for the rebuild, re-do the finish with a satin bead blasting and action work, this is what came back....
Pretty happy with the results, it's a shooter.... and with the Classic front sight I can pretty much tailor the front sight to meet my needs, but settled with a gold bead on a Patridge....
Just a quick update, the timeframe for this build was a bit older than my memory remembers, took the Spegels off and see that they are dated back to 2007.... so this project was a bit older than 10 years ago.. 