KCI ?

KCI USA?....they come from Korea I think. Bought a couple 33 round Glock stick mags at a gun show for $9/ea. They were terrible. Loading was stiff. Follower stuck causing FTF. One "bulged" and the seam started to separate. Those are the only KCI mages I have experience with. I wouldn't gamble with them again. I tossed the bad one and gave one to a buddy. He had the same issues. Used in Ruger carbines.
 
I bought 3 of the 17 ( or 15? ) rounders probably 12 to 15 years ago.
Work perfect in my G17, G19 and PC Carbine. They are in the range bag every trip.

For only $9 you should at least try one!
 
KCI has made good 15-round M1 carbine mags for many years.

Based on their carbine mags, I bought a couple of Glock 17 mags over a decade ago. One mag worked fine and the other was balky. My son is a Glock Advanced Armorer and he said the mags were constructed just like Glock mags. He also identified the problem with the balky mag as the follower catching on polymer overflash in the inside of the aluminum mag shell. He cleaned out the overflash and the mag subsequently worked fine.

A few years ago, KCI-USA was set up as a US distribution subsidiary and KCI reportedly improved quality control, so I bought a half dozen of the new gen2 mags. Five of the mags were fine; one mag had a little overflash and KCI immediately replaced that mag. Otherwise, I have had no problems with the KCI magazines.
 
KCI makes good stuff and its inexpensive. Try it out, you may be impressed. Buy from someone that accepts returns, then all you are going to be out is your time...
 
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Buy from someone that accepts returns, then all you are going to be out is your time...

Well, you would likely have to pay the shipping to return it, no 🤷‍♂️
 

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