12 rounds and I like it . It is my second one. My first went to my Son and I replaced it with a stainless one. We have never has an issue with them. I know lots of people who do not like them.
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I bought the G2c and a couple G3 17 round mags.
The extra length of the mag gives me a much better grip. I draw left handed.
It's fun to shoot. I won 1000 rounds of 9mm in a drawing so I can practice for a day or 2. Lol