One of the issues here in CA is that most LGS owners really do not fully know or understand the CA firearms laws... and many are quite content to remain that way.
The M-41 is not only excluded from needing to be on the DOJ Handgun roster, it is excluded from all of the provisions contained in the statue:
"Pursuant to California Code of Regulations, title 11, section 5455, the Roster of Exempted Olympic Competition Pistols established by DOJ identifies all Olympic pistols
exempt from the unsafe handgun and assault weapon statutory provisions".
Those so-called "statutory provisions", includes the new micro stamping law that
new semiauto pistols must have in order to qualify for going through the process of being drop tested and added to the regular DOJ handgun roster.
It matters not one iota, whether or not a Model 41 was made on the factory floor or the Performance Center.
Under the existing Olympic exemption, it only needs to be a Smith & Wesson model 41... period. When the gun is DROS'ed, the LGS only has to click on the "Curio/Relic/Olympic Pistol/Exempt" button in the DROS Entry System window, and fill in the pistol information.
There is no SKU reference like there is on the regular "unsafe handgun roster", so that does not come into play to differentiate the difference.
However having said that, good luck in finding an LGS that's willing to take the time learn or listen. Luckily for me, I found one such local LGS that would, and they looked that what I printed off from the DOJ website and they also talked to the DOJ to confirm things.
As a C&R (type3) FFL holder with a CA Certificate of Eligibility (COE), that opened up avenues for me that were flatly shutdown by most other shops.