It depends on what you mean by “work”. The Legend mag floorplates don’t quite clear the heel release, but they do stay in. You can mill (or file them a bit) and they work great. You can also replace with 210/225 floorplates, the aluminum Wyss floorplates, or the Nill heavy steel ones. If you’re just scrolling through Gunbroker or somewhere, it’s the blue and red packaging. Still a lot of NOS mags floating around for $40-50.

Or you can just do the Swiss thing and own a single mag.😂

 

I just went on eBay and the 'broker, all the packaging is gray and silver.

Also, can you confirm the Italian-made 210 Magazines will NOT work in a P49? This is my source for that

https://www.sigtalk.com/threads/way-to-get-sig-p210-p49-magazines-heel-release.442833/

Just want to confirm those are a nogo even with different floorplates. Speaking of which, not finding sites for Wyss or Nill, where are these available?

 

I just went on eBay and the 'broker, all the packaging is gray and silver.

Also, can you confirm the Italian-made 210 Magazines will NOT work in a P49? This is my source for that

https://www.sigtalk.com/threads/way-to-get-sig-p210-p49-magazines-heel-release.442833/

Just want to confirm those are a nogo even with different floorplates. Speaking of which, not finding sites for Wyss or Nill, where are these available?

I suspect all of the non-Swiss mags are Mec-Gars. Not sure why some work and some don’t. Also not sure why people in your link are reporting any non-Swiss mags work without modification (the ones I have are pictured in Post #11 of your link—baseplates need to be shaved down for those. You can see the mag catch is not fully engaged in his second photo).

Nill baseplates are pricey, but nice:

SIG 210 special magazine floor plates, mag.catch bottom, blue steel,(ext.12mm)-SI91

Model: Magazine floor plate extension The appearance of the magazine as well as ease of insertion is improved with this magazine floor plate extension. The extra weight

us.nill-shop.com

Wyss Waffen is Swiss:

Wyss Magazinboden Ergonomic zu SIG P210 orange - Kurt Zimmermann Waffen AG

Wyss Magazinboden Ergonomic zu SIG P210 orange Magazinböden Ergonomic Verbessert die Position des kleinen Fingers. Ideale Ergänzung...

www.waffenzimmi.ch

Not sure why the Wyss plates are so expensive—I remember them being like 20 francs before. They are definitely not worth more than that.

 

I may be wrong, but I have always been under the impression that only original, Swiss made magazines will work.

 

The Legend mags work just fine. The only difference is the finish is rougher inside so they don’t load as smoothly.

The ones that famously fit, but don’t function, are the Pro-Mags (by reputation, I don’t have any firsthand experience with these).

 

Betting the Italian ones are Mec-Gars. Not a lot of options out there really

 

Never, absolutely never buy Pro Mag P210 Mags! These will produce FTF and the slide does not keep open after the last round!

The Pro Mag is pictured on the right:

 

Just dropped deuce and a half on a NOS factory mag. To quote the Ian Dury song "I know it's going to fit"