FN Scar help. > General Discussion

Posted: 8/17/2017 6:43:12 PM EDT

I know diddly about the FN Scar. Friend purchased this used. Is looking for a replacement piston. Im guessing the previous owner fired corrosive ammo a lot. Its a 556. Can anyone suggest a replacement piston ?

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Posted: 8/17/2017 6:44:05 PM EDT

[#1]

Hory chit!

Eta: LA? Flood damage? Corrosive 5.56 isn't really common.

Posted: 8/17/2017 6:48:24 PM EDT

[#2]

Salt water? damn.

Posted: 8/17/2017 6:49:21 PM EDT

[#3]

Sold out right now but you could check here.http://www.midwestgunworks.com/page/mgwi/prod/F141200010

Posted: 8/17/2017 6:50:04 PM EDT

[#4]

Something is telling me that the seller did not disclose that minor detail.

WTF?

Posted: 8/17/2017 6:50:07 PM EDT

[#5]

http://www.midwestgunworks.com/page/mgwi/prod/scar-parts/F141200010

Posted: 8/17/2017 6:53:22 PM EDT

[#6]

Try cleaning it first??

Does the rifle function?

Posted: 8/17/2017 6:58:22 PM EDT

[#7]

http://www.mototecheng.com/index.php?route=product/product&product_id=52

Posted: 8/17/2017 7:08:02 PM EDT

[#8]

Talk about zero maintenance

Posted: 8/17/2017 7:08:42 PM EDT

[#9]

Quote History

Quoted:
Try cleaning it first??

Does the rifle function?

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Rifle does function

Posted: 8/17/2017 7:26:45 PM EDT

[#10]

More pics

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Posted: 8/17/2017 7:28:24 PM EDT

[#11]

Shot suppressed? What about the rest of the rifle? BCG? Barrel?

Posted: 8/17/2017 7:28:51 PM EDT

[#12]

Quote History

Quoted:
More pics

https://www.AR15.Com/media/mediaFiles/213498/IMG_3269-282981.JPG https://www.AR15.Com/media/mediaFiles/213498/IMG_3270-282982.JPG

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That thing is fine. Keep shooting. BTW, I doubt it was from corrosive 5.56.

Posted: 8/17/2017 7:29:27 PM EDT

[#13]

Quote History

Quoted:
More pics

https://www.AR15.Com/media/mediaFiles/213498/IMG_3269-282981.JPG https://www.AR15.Com/media/mediaFiles/213498/IMG_3270-282982.JPG

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~~That thing is fine. Keep shooting. BTW, I doubt it was from corrosive 5.56.~~

Double.

Posted: 8/17/2017 7:31:18 PM EDT

[#14]

I have well over 2500 rounds through my Scar16 and the piston looks clean as the day I got it.

Something wrong there. Did the previous owner put a solvent in there to clean it against manufacturers advice then fail to clean it all out ?

It almost looks like a copper solvent was used.

Posted: 8/17/2017 7:32:54 PM EDT

[#15]

Check with FN.They might like to have that one for testing.

Posted: 8/17/2017 7:38:43 PM EDT

[#16]

Quote History

Quoted:
More pics

https://www.AR15.Com/media/mediaFiles/213498/IMG_3269-282981.JPG https://www.AR15.Com/media/mediaFiles/213498/IMG_3270-282982.JPG

View Quote

Not to say that it wont continue working for quite some time, but that is not normal. I would talk to FN about it and get a replacement JIC.

Posted: 8/17/2017 8:13:58 PM EDT

[#17]

No idea about previous owner . Humidity stays high here near 100%

Warning

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[ARCHIVED THREAD] - FN Scar help.

[ARCHIVED THREAD] - FN Scar help.