*Did not melt* my PS90 mag to the receiver - Page 1

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[ARCHIVED THREAD] - *Did not melt* my PS90 mag to the receiver

Posted: 9/5/2021 11:23:32 AM EDT

Edited title to reflect new info based on feedback in this thread.

Suppressed, SBR early (gen 1 trigger pack OD green) PS90.

Shot about 200 rounds in a 1 hour time block, alternating with some other guns.

Can't remember if it was an FN or ATI mag, but after I got home I could not remove the magazine until I pounded it free with my palm. I hit it hard to get it unstuck.

The gunners at Federal Cartridge used to say their FiveSeven pistols used to seize open after they shot a bunch of quality checks, more than one was ruined melting. Didn't believe it until today.

Anyone else experience this?

BTW--still love the gun, one of my faves.

Posted: 9/6/2021 2:36:35 PM EDT

[#1]

Never seen this before on a P90. I've spent a lot of time on the platform including a full auto suppressed.

Gonna go with it being an ATI mag as the problem or a defective FN mag.

Did it melt the mag any that you could see after getting it out?

Posted: 9/6/2021 2:41:38 PM EDT

[#2]

OP, got a picture of the mag and the PS90. Pictures help a lot in the online world.

Posted: 9/6/2021 9:39:06 PM EDT

[#3]

I also have spent a crap load of trigger time doing mag dumps on a P90 (several thousand rounds) and have never encountered a problem with mags melting

BTW, Federal DOES NOT PRODUCE 5.7X28mm ammo!!!

All Federal, Speer Gold Dot, and FN SS197 5.7X28mm is loaded by Fiocchi in Ozark MO

Posted: 9/7/2021 1:16:57 PM EDT

[#4]

Quote History

Quoted:
I also have spent a crap load of trigger time doing mag dumps on a P90 (several thousand rounds) and have never encountered a problem with mags melting

BTW, Federal DOES NOT PRODUCE 5.7X28mm ammo!!!

All Federal, Speer Gold Dot, and FN SS197 5.7X28mm is loaded by Fiocchi in Ozark MO

View Quote

this!!! federal on the box , buts fiocchi crap ammo. i wont spend another penny on AE/Fiocchi 5.7 ammo ever again. Nothing but FTE FTL etc

Posted: 9/7/2021 7:25:57 PM EDT

[#5]

Quick observation did not reveal any extensive damage, so I did not separate out that mag and its mixed in with all the other ones.

Ill try again next time I shoot.

I like pictures too, but WTF info could you glean of a PS90 with a mag in the chamber, you couldn’t even see the area it got melted stuck.

Posted: 9/7/2021 7:29:46 PM EDT

[#6]

OP, if you couldn't remove the mag, how were you sure the chamber was clear before you left the range?

Posted: 9/7/2021 7:40:06 PM EDT

[#7]

Quote History

Quoted:
Quick observation did not reveal any extensive damage, so I did not separate out that mag and its mixed in with all the other ones.

Ill try again next time I shoot.

I like pictures too, but WTF info could you glean of a PS90 with a mag in the chamber, you couldn’t even see the area it got melted stuck.

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So you claim a mag melted, but threw it into a pile to be mixed with good mags?

Pictures of the area that got melted is exactly what people want to see

Sorry but everything sounds like BS. The mag doesn't even touch metal except at the tail, but that's not going to get it stuck. Perhaps fouling caused the mag release to get stuck, but don't see it melting to the receiver.

Posted: 9/7/2021 8:36:53 PM EDT

[#8]

Quote History

Quoted:

So you claim a mag melted, but threw it into a pile to be mixed with good mags?

Pictures of the area that got melted is exactly what people want to see

Sorry but everything sounds like BS. The mag doesn't even touch metal except at the tail, but that's not going to get it stuck. Perhaps fouling caused the mag release to get stuck, but don't see it melting to the receiver.

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Quote History

Quoted:

Quoted:
Quick observation did not reveal any extensive damage, so I did not separate out that mag and its mixed in with all the other ones.

Ill try again next time I shoot.

I like pictures too, but WTF info could you glean of a PS90 with a mag in the chamber, you couldn’t even see the area it got melted stuck.

So you claim a mag melted, but threw it into a pile to be mixed with good mags?

Pictures of the area that got melted is exactly what people want to see

Sorry but everything sounds like BS. The mag doesn't even touch metal except at the tail, but that's not going to get it stuck. Perhaps fouling caused the mag release to get stuck, but don't see it melting to the receiver.

I have to agree I just did 150 rounds of SS 197 doing rapid fire out of steel plate and 18 2 L soda bottles filled the water and I left the last magazine in my PS 90 SBR after I fired all the rounds. I had no issues with any of my magazines whatsoever (melting or otherwise)

Posted: 9/8/2021 6:23:46 AM EDT

[#9]

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Quoted:

OP, if you couldn't remove the mag, how were you sure the chamber was clear before you left the range?

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Not the OP, but couldn’t one do it by looking and feeling through the ejection port? Or am I missing something?

Posted: 9/8/2021 8:58:17 AM EDT

[#10]

Quote History

Quoted: Not the OP, but couldn’t one do it by looking and feeling through the ejection port? Or am I missing something?

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I suppose. On the AR57, I'd just remove the mag & check the chamber, but I was on a range where the action had to be open when we went cold. Chamber flags or summat.

Posted: 9/8/2021 7:21:52 PM EDT

[#11]

Quote History

Quoted:I suppose. On the AR57, I'd just remove the mag & check the chamber, but I was on a range where the action had to be open when we went cold. Chamber flags or summat.

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FWIW, it would be typical to have the chamber flag sticking out the ejection port too.

Posted: 9/9/2021 10:41:59 AM EDT

[#12]

OP has gone silent after being called out, hmmm

Posted: 9/9/2021 2:41:53 PM EDT

[#13]

If he claims it’s a FN magazines, I’m calling bullshit!

We’ve done NUMEROUS back to back mag dumps on our P90 without ANY issues!

Full Auto P90 Mag Dump

https://www.youtube.com/watch?v=G2lGyjfCaBM

Posted: 9/11/2021 5:46:21 AM EDT

[#14]

200 rounds in an hour? I've done 250 in full auto inside of 5 minutes and didn't have this issue (rental from an SOT before anyone freaks out). I'm thinking it's more likely you had carbon buildup that cooled between the range and home. Slapping it with your palm sounds to me like it's well within tolerance, from your thread title I thought you would have had a picture of actual melting.

Posted: 10/4/2021 11:01:41 PM EDT

[#15]

Fake news.

Posted: 12/8/2021 1:50:38 AM EDT

[#16]

who has the money to shoot 200 rds of 5.7 in a hour these days?

Posted: 12/8/2021 6:25:52 AM EDT

[#17]

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Quoted:
who has the money to shoot 200 rds of 5.7 in a hour these days?

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Not OP because this never happened

Posted: 12/8/2021 8:27:15 AM EDT

[#18]

I’ve never heard of this ever happening. Ive had PS90’s for decades. Interesting. Can you post a picture of the mags feed ramp section?

Posted: 12/9/2021 4:42:31 PM EDT

[#19]

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Quoted:

Not OP because this never happened

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On our P90 we burned through 2,000 rounds of SS198 in less than two hours.

I saw FN P90 demo guns at an L.E. Demo Shoot that didn’t shut down for nearly 8 hours

Posted: 12/12/2021 12:48:13 AM EDT

[#20]

maybe just maybe a crappy non fn aftermarket mag may melt in the hot sun during extreme use possibly ???????, but no way a Fn mag will melt from a normal firing rate

Posted: 10/15/2022 8:05:56 AM EDT

[#21]

I think you guys are right.

I pulled the gun out and it's an FN mag with no melting at all (have not shot it since I OP).

It was shot 100% suppressed, and there is a typical carbon fouling so it probably was just carboned up a little.