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Rust on M4 tips


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I have a bit of rust in this rear sight, i tried to get pictures. I bought the m4 used, and looks good other than some rust on bolt and here. Can I get this out without disassembly? ive heard its a pain to remove



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This is my opinion only. You don't  know where the rust is coming from. It is best to disassemble the sight, thoroughly clean and oil it. Replace any suspect parts. You paid a lot of money for that shotgun. It is worth the effort to ensure that corrosion doesn't spread. Worst case, take it to a gunsmith. Protect your investment.

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