Thequickad,
I'm happy you found a source of inexpensive mags. Since you also reside in the Peoples Republic of California I suggest you aquire as many Colt magazines as you are able. Colt factory mags seem practically indistructable. One possible source for them is KY Imports. I have not purchased any from them. (Yet) I don't know if they are really available. They are advertised for sale on their web-site. Here's the info:
Phone (502) 244-4400 , Fax (502) 244-0577,
E-mail kyimports@ntr.net. Let me know how they are on service if you get any. We don't have much time left in the year to aquire high capacity mags. Good luck!