I have two Pro Mag Sig P229 .40/.357 magazines for sale. New in the package (nos). These are 10 round magazines, not the full 12 of the standard. (Sorry, I used to live in a non-free state!) $20 for both.
I can meet near Dobson and the 202 in Mesa or near 51st Ave and Baseline in South Phoenix/Laveen.
Willing to trade for .223/5.56 ammo (NOT steel-cased), 7.62x39 ammo (NOT Tula), or .308 ammo (NOT steel-cased).