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Posted: 1/8/2024 1:18:58 PM EDT
[Last Edit: mk4dubbin]
Took this out recently from getting it back from the builder. Put a mag or two through it, zero malfunctions but extremely overgassed. Installed a KNS piston and took it back out yesterday. This kept happening while trying to adjust the piston. Seemed to do it with both a lot of gas, and with little gas. I believe i had more issues with a full mag than empty. I only brought 1 magazine and I am unsure if it's the same mag I originally had zero failures with.
You can see it picked up a new round which is nearly chambered, but the little edge on the front of the carrier has also picked up a round and ran it into the reciever.  Attached FileUpdate post below |
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Posted: 1/8/2024 4:02:38 PM EDT
[Last Edit: CPT_CAVEMAN]
[#1]
It's stripping 2 rounds meaning the magazine or rounds are sitting too high?
Might make sense why it's doing it with a full mag, all the pressure it pushing them up? Lips are stretched/messed up? Bet someone on here knows for sure, maybe they'll reply |
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OR, USA
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Posted: 1/8/2024 5:43:42 PM EDT
[#2]
I'd suspect the magazine. I'd try another mag first.
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TN, USA
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Posted: 1/9/2024 11:10:49 PM EDT
[#3]
Is that a live round in the chamber or a spent round?
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Posted: 1/10/2024 8:29:28 PM EDT
[#4]
Quote HistoryOriginally Posted By GRMGR1: Is that a live round in the chamber or a spent round? Live |
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Posted: 1/10/2024 8:36:07 PM EDT
[#5]
Extractor condition?
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Posted: 1/11/2024 7:51:58 AM EDT
[#6]
Had this same malfunction multiple times with a proven reliable 556 AK. Was 100% the magazine in that case.
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GA, USA
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Posted: 1/20/2024 2:31:07 PM EDT
[#7]
What do you look for in the magazine that indicates stretched feed lips? Is there a measurement you need to verify or is it a visible sign? I have a bunch of surplus magazines and few have feeding issues at the end of the magazine and I would like to be able to check them. Could it be a mag spring issue, or just rough inside magazine finish/dirt?
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Posted: 1/21/2024 2:17:21 PM EDT
[#8]
Quote HistoryOriginally Posted By Sgt_Fury: What do you look for in the magazine that indicates stretched feed lips? Is there a measurement you need to verify or is it a visible sign? I have a bunch of surplus magazines and few have feeding issues at the end of the magazine and I would like to be able to check them. Could it be a mag spring issue, or just rough inside magazine finish/dirt? In your case I would look at this first. As far as the other, visual inspection and you could measure/compare to known good magazines. |
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Posted: 2/10/2024 7:06:22 PM EDT
[Last Edit: mk4dubbin]
[#9]
I was able to aquire 2 new production galil rock and lock mags. I shot a hundred rounds or so of some reman junk and had 0 malfunctions.
KNS piston tamed this beast beautifully |
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Posted: 4/16/2024 11:40:18 PM EDT
[#10]
Quote HistoryOriginally Posted By mk4dubbin: I was able to aquire 2 new production galil rock and lock mags. I shot a hundred rounds or so of some reman junk and had 0 malfunctions. KNS piston tamed this beast beautifully |
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Posted: 4/26/2024 4:51:20 PM EDT
[#11]
A different mag may have fixed the symptom, but the root cause is a sharp edge or bur on your bolt.
See pic. That corner edge needs a very slight radius on it to prevent it from dragging the #2 round forward. Tony  |
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