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11/7/2023 11:30:04 PM EDT
The only thread I found on a search was from 06/2021, and it referenced getting KCI mags.  My experience with KCI mags for Glock was not good, as the magazine feed lips were soft and would open up when shooting, so the mags were not something I would rely on for reliability.

So is KCI the best way to go for the M1 carbine?  If some of the new mags from places like Auto Ordnance a better choice.  Should a person stay with original older surplus USGI ones that come from a variety of makers?

So what is the current best choice?


CY6
Greg Sullivan "Sully"
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11/7/2023 11:56:19 PM EDT
[#1]
USGI 15-round if you can find them.
Et quant au repos ? Le Caliphate doit être essuyé de la terre.
11/8/2023 12:44:59 AM EDT
[#2]
USGI are the best but also expensive. The KCI mags are decent, I've a bunch and had decent results.
11/8/2023 2:52:04 PM EDT
[#3]
Quote History
Originally Posted By ODA_564:
USGI 15-round if you can find them.
View Quote


And prophylactically replace the springs with Wolff. Cheap insurance.
11/8/2023 4:30:02 PM EDT
[#4]
I've got a few dozen KCI's both 15rd and 30rd. They all run great for me in 5 carbines. My only gripe is they need to be loaded and unloaded 5 or 6 times until they feel smooth. (Especially the 30rd'ers). Oh and the finish flakes off rather than wearing smoothly.

I've never used any other KCI mags and probably won't, but for the Carbine they haven't done me wrong.
11/8/2023 9:38:05 PM EDT
[#5]
I use KCI in my M2 in full auto and have had no problems.

I also have used Keepshooting.com 30 rd M2 mags also flawless.

Video below is a new KCI mag and a repaired Plainfield "para" stock on my M2


[youtube]Lcjvfi3puGg[youtube]

M2 with Para-Plainfield stock


M2 with Para-Plainfield stock
11/9/2023 3:12:51 PM EDT
[#6]
I have a dozen KCIs. Disassembled, cleaned, and ran a file over the underside of the feed lips. All have been flawless.
"What is socialism? The most difficult and tortuous way to progress from capitalism to capitalism." -Stated at an intel conference, East Berlin, Oct. 1988

"Every election is a sort of advance auction sale of stolen goods." -H.L. Mencken
11/10/2023 4:09:39 PM EDT
[#7]
With the KCIs just make sure the springs are in right way around.
11/10/2023 6:36:07 PM EDT
[#8]
Quote History
Originally Posted By Westmalle8:
With the KCIs just make sure the springs are in right way around.
View Quote


This and not a bad time to clean any rough edges off of the follower, feed lips, certainly can't hurt.  Having the M2 mag "catch" button helps hold them as they have the proper M2 extra lug, as do Keep Shooting mags.

I swapped out a factory KCI spring for a Wolff extra power - Comparing the two they both perform flawlessly and the factory KCI spring is a little larger than the Wolff.

Pic below.  Note the longer spring is the factory KCI one.


11/10/2023 7:13:06 PM EDT
[#9]
Genuine GI
Keepshooting mags

KCI are OK, but are more flimsy than these two.   I won't be buying any more KCI.
11/10/2023 9:48:50 PM EDT
[Last Edit: DonFlynn][Edited] [#10]
Quote History
Originally Posted By M4BlackRifle:
Genuine GI
Keepshooting mags

KCI are OK, but are more flimsy than these two.   I won't be buying any more KCI.
View Quote



Interesting. I'll have to try the Keepshooting mags

ordered 10 of them, we'll see
11/12/2023 8:25:11 AM EDT
[#11]
I have some older KCI mags in 30 and 15. Mine came with a beautiful blued finish just like GI. I tried them all and no problems at all. The ones I use regular I had CeraKoted. They are great for me and 7 different carbines.
 Once I found some NOS 15rd military mag springs wrapped in wax/cosmoline wrap. I used three springs for some old GI mags and am hoarding the rest. Don't remember where I got them (mail order) but they screwed up big time on my order. They were 3.50, I needed 3 so when the order comes in it is the packs of 10 each for about 15. with shipping. I was a happy camper.
1/31/2025 8:42:38 PM EDT
[#12]
Dredging this thread up.

I bought a few KCI 30 round mags for my carbine, should I buy a type IV mag catch and swap them? I’ve done a little reading and some people say it’s not necessary if you aren’t going to shoot a lot.
If you aren't representing Jesus in a way that makes people want to hang out with you, you're doing it wrong.
2/1/2025 10:14:56 AM EDT
[#13]
Quote History
Originally Posted By Sputnik556:
Dredging this thread up.

I bought a few KCI 30 round mags for my carbine, should I buy a type IV mag catch and swap them? I’ve done a little reading and some people say it’s not necessary if you aren’t going to shoot a lot.
View Quote



My 2 bits, yes you should change the catch.
2/1/2025 10:30:26 AM EDT
[#14]
Quote History
Originally Posted By DonFlynn:



My 2 bits, yes you should change the catch.
View Quote


+1
2/1/2025 10:37:38 AM EDT
[#15]
The Keep Shooting mags have been GTG.  I do wish they’d stamp something on ‘em though (anything really…logo, initials, etc.).  I’ve gotten ‘em mixed-up.  Nothing an engraver can’t fix in 2-sec though.

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