Oh, I understand 10-round extended magazines. I have some for my 4506 and 4566TSW pistols. I'm talking about 10-round flush magazines like for my M&P45, HK45, 1911A2, etc.I have a 10 round mag for my W. Germany P-220. It doesn't feed reliably though. I have never had a problem with the 8 round mags.

It's a Massachusetts thang.
