Really? Because the 21 and the 21sf mags used to not be the same. Something about a 21sf fitting in a 21 but not the other way around due to mag release. But i heard current production of mags was different, someone correct me if I'm wrong or heard wrong.
i have a 21sf and love it except for the ambi mag release
There seems to be a lot of that going around, right Cwood?
In my opinion if you get a SF model you should get the non-ambi mag release version so you can use both the older style mags and new style mags