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Posted: 2/22/2004 1:36:55 PM EDT
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Hi, I have a new Bushmaster rifle and I can see rust starting to form under the FSB. I always oil it really good, but still rust. Is there anything I can do about it? Will keeping it lubed stop it? Do any of you have this problem? Thanks for any help. |
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I have read here in the past that Bushmaster puts the front sight base on the barrel before they give it the manganese phosphate treatment. I assume this leaves bare metal under the base. So you may actually be seeing rust forming under there. Bushmaster should correct this manufacturing oversight, in my opinion anyway. Shabo |
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Quoted: I have read here in the past that Bushmaster puts the front sight base on the barrel before they give it the manganese phosphate treatment. I assume this leaves bare metal under the base. So you may actually be seeing rust forming under there. I must confess to thinking the same thing before opening this thread. |
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Quoted: I have read here in the past that Bushmaster puts the front sight base on the barrel before they give it the manganese phosphate treatment True. FALARAK is also correct that muck can ooze from mysterious places if you get the barrel hot enough. I have 5 Bushmaster barrels that show no rust in that area. Even after several all day shooting sessions in the rain, all that's needed for maintenance is a little shot of CLP. What kind of oil are you using? [url]http://www.thegunzone.com/rust.html[/url] There were some problems with the lube in some Otis cleaning kits a while back IIRC. |
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It isn't rust you're seeing; it is the parkerizing solution that's under the front sight base. It can seep out of a new barrel, and sometimes it will dry and leave a bit of red-brown "crust" around the front sight base. It isn't a problem and will clean up with a tooth brush and CLP if you want to get rid of it. -Troy |
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Well i just cleaned and oiled another BM barrel Saturday. And as with the 6 or so other barrels i have had, the same stuff around the sight base. I do know that every New BM barrel ive had has had rust in the gas port on the front sight base. Its always been light surface rust, No big deal. Comes right off with a Q-tip and CLP. After Parkerizing you sometimes can get rust albeit just very light suface stuff. I still think the stuff where barrel meets FSB is still some sort of rust but i never had any problem with it, never gets worse and can useally get rid of it G-Man |
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