I recently ordered A M11-A1 (circa 2013) which spare magazines should I order? I have read multiple post as to which one or maybe both. I would love to hear from someone with first hand knowledge. Thanks

229-1 is the correct one. That's the one that is wider at the bottom half. You can also use the old P228/P229(9) mag, but folks tend to use it for the range only.

Thanks for the quick reply it is much appreciated.

Looks like you're new here. Welcome aboard!

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