They started selling the 4" 625-8 8/02 and seem to have dropped it fairly recently. Why do you not want a 625JM? It's MSRP is up now - but still only $40 over the standard 5"-er, which was the same price as the 4"-er. If it's the Miculek stocks, even if you use them for firewood, you'll only be out $20 for some 'stock' OEM-style Hogues - or go up to the recoil absorbing .500 Magnum Hogues for $35 (S&W Access.). You'll still have hard chromed hammer & trigger - and a spring loaded gold bead Patridge front sight... you can change that to a HiViz f.o. sight, etc, in seconds. Everyone I have seen has had an eased ejector star and the semblance of a trigger job - a true bargain. If it's that laser-etched 'JM' on the sideplate, it'll come off...
If you end up with an excess Miculek stock, I have a need for one... and a stash of OEM Hogue rubber monogrips!
Stainz
PS That easily changed front sight is nice!