From day one, the springs in the KCI magazines seemed anemic compared to those in Glock magazines.
Your KCI spring looks about like mine did when I dumped them.
I just pulled a couple of the others I have, and they stick out the bottom of the mag about the same as yours, maybe a little farther. The Wolff's stick out something like the new Glock spring.
I wish now Id kept the old KCI/KHAN springs, as I'd like to have tried them again. Im still thinking they werent the issue.
When you consider the ones I replaced still had at least around 260 cycles each on them, just figuring 5+ years of weekly use, Im still not going to bitch for $5-7 a mag I paid for those. The Wolff replacement springs cost me about the same as the mags did. Mag bodies/lips are fine. Im also still running a couple out of the early mags that I didnt get springs for (they come in packs of ten). Those mags are still working fine as well. They have over 300 cycles on them now at this point.
I went through a similar experience for a short period with a couple of extractors. Thats where I came to realize that it was my brass wearing out that was the issue, and not the extractors (and most likely not the mag springs too). I switched back the first replacement extractor, and it worked fine (with factory ammo), and has been in the gun ever since.
The only thing good to come of all that drama is, Ive found that worn out brass is great for practicing failure drills. They happen randomly, and with no warning, so its more like the real deal when they occur.
Original unlined all the way to the left.
The first couple of Glocks I had back in the 80's had the unlined mags. They worked fine, just wouldnt drop free until they were near empty. Nothing really wrong with that, and in a way, things have come full circle now, with current thoughts on ripping the mags out during a reload, whether they drop or not.
