I just realized something that I can’t believe escaped my notice for so long, especially as the parts are sitting right here in my gun safe.
Mec-Gar apparently makes two different extended magazines that fit P228/P229*
That is, *some* P228s, some P229, and all P229-1.
The interesting thing is one is 18 rounds and the other is 17 rounds... but not the way that you would expect.
P229-1 mags are slightly wider than early P229 9mm and P228 mags, a function of when they standardized the P229 to use the same frame whether 9mm or .40. Part of that update meant that the standard 9mm mags were able to hold more rounds, so 9mm rounds went from 13 to 15 capacity.
Here’s the strange part - in these extended capacity Mec-Gar mags, the specific P229-1 version holds 1 round less than the older version marked as P228.
The basepads themselves are different - the P228 version is marked PLUS 3 while the P229-1 version is marked PLUS 2.
I suppose I’d have to work at Mec-Gar to learn why this was done, but it has no negative impact on P228/P229 owners; the fact that absolutely *all* P229/P229-1 9mm frames can use the P228 mags means that all can use the 18 round version. So why do they make the 17 rounder different, or even at all? I don’t know the answer to that.
The P228 version fits my P229 Legion SAO perfectly, no perceptible difference in fit and no rattle. There’s a 1.15mm measured difference in width as expected.