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Old October 25th, 2018, 05:16 PM #1
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PSA AR 10 FTF

Just got a PSA lower GEN2 and PSA upper.The upper is PSA GEN2 PA10 20" RIFLE LENGTH 7.62 NATO 1:12 CHF. The mags are promag 20rnd. Ammo,is Assie surplus and German surplus.
The problem is 1 out 5 rounds being jammed into the feed ramp or chamber not which . The rounds are either getting a v dent in the tip or bent at angle. Is this a mag related problem? I tried 3 differant Promags. I read something about CHF uppers having a differant feed ramp cut but dont understand all that.
I have return forum from PSA but if it is just a mag issue I would not go though the hassle of returning it. I feel I will have to send it in but need the right words to explain the issue
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Old October 26th, 2018, 12:16 AM #2
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I don't have a full PA10 rifle yet, waiting on my upper. However I have been researching the issues the PA10 is having.

Not sure if its your problem, in any case take a read here about buffer system issues:

https://forum.308ar.com/forum/135-pa...-state-armory/
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Old October 26th, 2018, 01:00 AM #3
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Quote:
Originally Posted by johnsopi View Post
Just got a PSA lower GEN2 and PSA upper.The upper is PSA GEN2 PA10 20" RIFLE LENGTH 7.62 NATO 1:12 CHF. The mags are promag 20rnd. Ammo,is Assie surplus and German surplus.
The problem is 1 out 5 rounds being jammed into the feed ramp or chamber not which . The rounds are either getting a v dent in the tip or bent at angle. Is this a mag related problem? I tried 3 differant Promags. I read something about CHF uppers having a differant feed ramp cut but dont understand all that.
I have return forum from PSA but if it is just a mag issue I would not go though the hassle of returning it. I feel I will have to send it in but need the right words to explain the issue
Try running FGMM through it. If it still causes the issues with that, then it is the rifle.
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Old October 26th, 2018, 02:10 PM #4
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I just boxed it up and sending it back to be repaired.
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Old October 28th, 2018, 02:02 AM #5
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Could even be a gas issue.
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Old October 28th, 2018, 03:21 AM #6
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Most of those factory PSA rifles need to be worked on by a qualified gunsmith. I hope you have better luck with your repair from PSA than most.
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Old October 28th, 2018, 04:01 PM #7
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I read something about CHF uppers having a different feed ramp cut but dont understand all that.

I looked into this from what I understand is if the upper receiver has the m4 feed ramp cuts and the barrel does not have then the bullet catches on the ledge because it is a bit lower. I dont know if this is the case with mine because It's already shipped. Not sure if you can even see it on a assembled upper. The video had the barrel out of the receiver. Will email PSA and ask them to look into it
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Old October 28th, 2018, 10:10 PM #8
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Try using metal magazines.
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Old October 29th, 2018, 12:13 AM #9
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If PSA finds nothing wrong that's the next step.
Have not seen much neg about the pro mags.
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Old October 29th, 2018, 08:56 AM #10
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probably irrelevant, BUT

I have a DPMS and it came with two DPMS brand mags (19 rd)

I bought another two metal mags a while back, that appeared to be identical but the feed lips were maybe a few MM shorter. They constantly failed to feed.

Try a different mag before you do anything else.
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