[ARCHIVED THREAD] - upper receiver markings...normal?

Posted: 2/24/2009 12:55:26 PM EDT

I just got my LMT upper in the mail today from JTAC, and the inside of the receiver had some interesting markings on it, it almost looks like the finished dripped a little, not sure if i should worry about it or not, kinda hard to tell in the pic. i know LMT test fires so i expected a little sings of usage. should i be concerned.

http://img26.imageshack.us/img26/7411/img1048.jpg

Posted: 2/24/2009 12:58:54 PM EDT

[#1]

I think LMT puts an anti friction coating on thier uppers.

This may be that coating.

I would just shoot it and not worry.

I'm guessing it looks ok on the outside surfaces.

Posted: 2/24/2009 12:59:32 PM EDT

[#2]

Normal. It is a spray on coating they do to increase reliability. There is probably also some splattered around the ejection port door edges if you look close enough.

Posted: 2/24/2009 1:02:21 PM EDT

[#3]

yea there is a little bit. it's also a super tight fit on my mega lower, is that normal? i have a RRA LPK and it's tight like, gotta hit it to get the rear pin thru

Posted: 2/24/2009 3:52:52 PM EDT

[#4]

The tighter the better

Posted: 2/24/2009 4:00:13 PM EDT

[#5]

That's just dry lube. Hit it with non-fluorinated brake cleaner if you want it gone. I wouldn't.

Posted: 2/24/2009 6:42:22 PM EDT

[#6]

Normal. I got that on a stripped defender 2000 complete upper I got 2 weeks ago. There were some coatings on the ejection port door as well. Shoots fine.

Posted: 2/24/2009 6:44:16 PM EDT

[#7]

It is on my like new 604 upper also.

Do yall know what uh 604 is o'er he-ar? Iii not I gon teee chu a le'on booa.

[ARCHIVED THREAD] - upper receiver markings...normal?

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[ARCHIVED THREAD] - upper receiver markings...normal?

[ARCHIVED THREAD] - upper receiver markings...normal?