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Posted: 3/2/2015 10:06:19 PM EDT
[#1]
Shoot your rifle. A lot. Then clean it, repeat.
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Posted: 3/3/2015 12:05:37 PM EDT
[#2]
I agree, shoot it more and put the magnifying glass away, lol!!! Lube it like you should, wipe it down with lubricant and don't worry about it.
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Posted: 3/8/2015 5:22:30 PM EDT
[#3]
Try using a different oil in the barrel extension.
I use Hoppes 9 as a cleaner and M-Pro7 LPX as a lubricant. |
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Posted: 3/8/2015 9:04:42 PM EDT
[#4]
AR15's are never a rifle I've worried about rust on. Most of the gun is aluminum and polymer. What isn't is chrome lined or a moving part that needs a fair amount of lubrication. Also, I've never heard of corrosive 5.56. Also, even if you had a little surface rust, it's never going to cause any major, long term problems.
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Posted: 3/19/2015 3:08:15 PM EDT
[#5]
I couldn't see jack shit in any of your pics, except the chamber pic. And it it wipes right off with no elbow grease, then its not rust.
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Posted: 3/19/2015 11:09:53 PM EDT
[#6]
I'm not seeing it. Looks fine to me.
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Posted: 4/6/2015 5:53:56 PM EDT
[#7]
Quoted:
I was looking over my rifle the other day and came across a few areas where I can see something but can not tell its rust. I live in a dry climate and always use CLP. The first area I'm mentioning are the teeth of the castle nut. I remember when I had my Magpul ASAP installed I found a substance of the same color around some of the threads on the buffer tube and thought maybe it was just a grease used to reinstall the buffer tube. What I could reach wiped off and the rest oozed away once CLP touched it. The buffer tube was reinstalled over a year ago so I don't know it what I'm seeing is a grease or rust. I might be worrying too much but I want to do everything I can to keep my rifle in shape. Thanks! <a href="http://s724.photobucket.com/user/xpsruler/media/Is%20this%20rust/20150227_004042_zpsw1czzyj5.jpg.html" target="_blank">http://i724.photobucket.com/albums/ww243/xpsruler/Is%20this%20rust/20150227_004042_zpsw1czzyj5.jpg</a> What I'm talking about can be seen in the cover of the castle nut tooth. <a href="http://s724.photobucket.com/user/xpsruler/media/Is%20this%20rust/20150227_003919_zps75dncqkt.jpg.html" target="_blank">http://i724.photobucket.com/albums/ww243/xpsruler/Is%20this%20rust/20150227_003919_zps75dncqkt.jpg</a> Another angle. <a href="http://s724.photobucket.com/user/xpsruler/media/Is%20this%20rust/20150302_174032_zpsozymrubl.jpg.html" target="_blank">http://i724.photobucket.com/albums/ww243/xpsruler/Is%20this%20rust/20150302_174032_zpsozymrubl.jpg</a> This was after using CLP and a Q-tip. Theres still a flake I can't reach under the castle nut but I don't want to take the castle nut off as it was staked. <a href="http://s724.photobucket.com/user/xpsruler/media/Is%20this%20rust/20150302_003102_zps37g11tqg.jpg.html" target="_blank">http://i724.photobucket.com/albums/ww243/xpsruler/Is%20this%20rust/20150302_003102_zps37g11tqg.jpg</a> Finally, could this be rust on the back of the barrel? It came off easy so I'm hoping it was copper. Just want an opinion. Oh, NO! I see rust! Better send that rusted piece of trash to me for proper disposal! Really now, I do see what you are talking about on the castle nut. It might be a little rust, where the finish was marred as the nut was tightened down. Nothing to be terribly concerned about though.... Keep a little lubricant on the cleaned surface, and it probably won't get any worse. Might not even come back at all. The copper colored piece at the back of the barrel is probably a small piece of brass that was scrapped away from the brass case as a round was chambered. Again, I wouldn't sweat that at all! You can STILL send it to me for proper disposal though...... 
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Posted: 4/6/2015 10:36:42 PM EDT
[#8]
Rust, I'm not so sure of by the pics bro. I will say if rust is a concern of yours I would suggest maybe trying a different CLP and look at your PMCS program. I have used more than an few CLP's over the years and I am currently using FrogLube CLP (which I will state I have no connections to the company other than I use some of their kit). Regardless of what YOU choose YOU should maintain a cleaning regime, IMHO, to prevent any rust, fowling and maintenance related issues. I will say that since I have been using FrogLube CLP I haven't. had any rust problems even being in the climate I am in South Carolina. I hope this helps
 . Edited to add content.
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Posted: 5/3/2015 10:07:47 PM EDT
[#9]
My opinion, I don't think it's rust. The castle nut looks like you said, dried oil or grease. The chamber looked like copper or brass. I've seen places like that before on my guns that came right off when cleaning. Especially on new guns with preservative oil. I think you're good to go!
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