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Old August 11th, 2017, 09:51 AM #1
Regulus91 Regulus91 is offline
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Universal M1 Carbine won't feed from 10 round ProMag

I did a search and found an older thread about M1 Carbine FTFs, and a few users reported having similar problems that were traced back to finicky magazines, but I don't recall seeing if anyone posted a fix for the issue. I'm having a similar problem with this 10-round ProMag steel magazine I got off Brownell's that won't feed. The damn thing won't "stay", it drops slightly whenever I fire so that the bolt won't strip a new round out of the mag. But it doesn't drop enough to fall completely free, if I tap or smack the bottom of it, and rack the charging handle again, it'll feed and just repeat the problem with each shot. I don't know if this is related, but it's oddly difficult to insert and remove too, I have to really shove it into place and tug on it to pull it free. (Har har, keep your minds out of the gutter! lol) It's a Universal commercial model, made in Hialeah, FL.


Is there anything I can do to fix the magazine, or is there a better brand of ten-round magazine I can buy online and have shipped to me here in MD? I got a 15-round mag at the Nation's Gun Show in Chantilly and it feeds great, I'm not sure of the brand but it feeds without any hiccups! I want to go back next time to get more 15 and 30 round mags, but I need a solution for my M1 Carbine in the meantime. Thanks!
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Old August 11th, 2017, 12:21 PM #2
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The real solution is to use 15rd GI mags .

Another factor frequently mentioned is out of spec mag catches .
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Old August 12th, 2017, 09:25 PM #3
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Pro mags are known to be troublesome.
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Old August 12th, 2017, 09:34 PM #4
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This is a shot in the dark but I had a FTF on a hand gun and it was bc I was not holding the gun properly. My arms were not locked preventing the recoil from doing its job. Just a thought to share with you.
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Old August 13th, 2017, 04:45 AM #5
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You might try some easy mods

I had similar issues, here is the video I did to explain the fix I used:

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Old August 13th, 2017, 07:12 AM #6
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I would try a different mag. Pro Mags are some of the worse.

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