Gouge in new PWS upper

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[ARCHIVED THREAD] - Gouge in new PWS upper

Posted: 8/17/2014 5:54:01 PM EDT

Just returned from a range trip with my new PWS MK116. Rifle functioned flawlessly as I expected. Upon disassembly and cleaning I noticed these gouges in the upper. I'm a bit concerned because they look deeper than a a little scratch on the finish. I've got a total of 180 rounds through this rifle and hope wiser men than I will be able to tell me what these gouges might indicate. Should I be concerned?

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Posted: 8/17/2014 7:40:03 PM EDT

[#1]

NP3 coated Roller Cam Pin. Standard AR cam pins feature a square (steel) head that grinds along the inside of the aluminum receiver.
Link

Posted: 8/17/2014 8:34:18 PM EDT

[#2]

Normal. Don't worry about it over time it will smooth out

Posted: 8/17/2014 8:39:56 PM EDT

[#3]

I've got a POF roller cam pin but it will NOT fit in my PWS for whatever reason. The size looks identical but I can not for the life of me get it to seat into the the hole all the way. The standard cam pin drops in without any resistance but that roller cam pin seems to get stuck. WTF?

Quote History

Quoted:
http://www.pof-usa.com/shop/img/p/1/5/15-large_default.jpg
NP3 coated Roller Cam Pin. Standard AR cam pins feature a square (steel) head that grinds along the inside of the aluminum receiver.
Link

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Posted: 8/17/2014 8:46:35 PM EDT

[#4]

do you have their gas key with the cut out for it? the link i provided is for the upgrade kit. i have no problems with mine

Posted: 8/17/2014 8:56:19 PM EDT

[#5]

Ah ha I see. I don't have the cut out gas key. That explains it. thanks for the link.

Posted: 8/17/2014 9:55:48 PM EDT

[#6]

Thanks for the reassurance. I see your in ID, any chance you are affiliated with PWS?

Quote History

Quoted:
Normal. Don't worry about it over time it will smooth out

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Posted: 8/18/2014 10:04:03 AM EDT

[#7]

so one poster advised me that the wear I have in my upper is normal. Is that the general consensus?

Posted: 8/18/2014 10:20:33 AM EDT

[#8]

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Quoted:
so one poster advised me that the wear I have in my upper is normal. Is that the general consensus?

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Yes, that is the norm for piston systems. After a bit, the wear will stop and it will continue to function just fine.

Posted: 8/18/2014 10:41:57 AM EDT

[#9]

whew, good news. Had a little anxiety there for a moment.

Posted: 8/18/2014 6:53:11 PM EDT

[#10]

I've been running the POF roller cam pin from day one on my PWS Mk110 and I still have gouging. Just sayin.

Posted: 8/19/2014 10:45:31 AM EDT

[#11]

No I'm not just a fan who owns many

Posted: 8/20/2014 10:08:39 PM EDT

[#12]

Quote History

Quoted:
I've been running the POF roller cam pin from day one on my PWS Mk110 and I still have gouging. Just sayin.

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Same here in my mk116 mod1, the wear looks very similar to what the op posted.

Posted: 8/22/2014 1:21:38 AM EDT

[#13]

Quote History

Quoted:

Same here in my mk116 mod1, the wear looks very similar to what the op posted.

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Quote History

Quoted:

Quoted:
I've been running the POF roller cam pin from day one on my PWS Mk110 and I still have gouging. Just sayin.

Same here in my mk116 mod1, the wear looks very similar to what the op posted.

+1, just checked mine and the same thing. I've put about 4000 rounds through mine and not a single problem. Cheers.

[ARCHIVED THREAD] - Gouge in new PWS upper

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