It has always been my firm belief that you should buy at least a few of the best magazines aftermarket that you can afford for your Self~Defense Carry.
But, naturally when going out shooting & doing informal hole making it's much more fun and your shooting sessions will "flow" much better if you are not constantly stopping to reload one or two or three magazines.
If your particular Colt or Colt Clone 1911 pistol functions perfectly well with factory Colt magazines or GI surplus magazines then there is no good reason not to buy a pile of them.
The GI mags dating to the mid to late 80s are pretty doggone good.
You'll often see them still sealed up at gun shows & lots of times popping up for sale on Ebay.
Heck...for $7.00 or $8.00 dollars per magazine they are extremely hard to beat and very well made.
On Ebay...just do not buy ANY pistol magazines from a seller named RedDogAlaskan. I think his mags are either Made In China Colt stamped counterfeits or all Colt & clone rejects.
If there is a good Ebay seller auctioning GI or surplus mags then buy some for yerself. Just a friendly reminder.
THE MAGAZINES IN THE PHOTO BELOW ARE GOOD GI MAGAZINES!