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Thread: Of springs and rust...

  1. #1
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    Of springs and rust...

    Many people love CS springs. Others strongly dislike them, claiming that rust is an issue. Rust is a big problem if it occurs on a spring due to the fact that the surface of the spring is what is doing a lot of the "springing". A rusty spring is much more compromised than say, a rusty slide, carrier, bolt, or whatever.

    I pitted the Colt Mil-spec 17-7 spring against the Sprinco White CS Moly-plated spring. The "humidity cabinet" also goes by the name "Dishwasher". No soap was used, and it was placed on heated-dry and the springs left in until cycle completed.

    I also pitted the Colt Mil-spec extractor spring against the SAW Ken Elmore "Green" extractor spring.

    Absolutely NO rust was observed on the Ken Elmore extractor spring, or the Colt action spring, even when white paper-towels were roughly swabbed over their surfaces. The other two springs rusted very notably, as depicted. All springs were used in my carbine previously, so as to have removed any passivated/painted/washed type surface treatments, as one would find on the springs in their "new in wrapper" state which would not represent an item in-use.

    Last edited by WS6; 09-28-15 at 23:46.

  2. #2
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    Good to know. Thanks.

  3. #3
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    Arnt all the springs on a Colt stainless? I don't know of any commercial AR15 LPK that use all stainless springs. I have looked and looked.

  4. #4
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    Recently opened a brand new Colt Delta ring assembly in the package to find the Leaf spring badly rusted.

    Sent from my PRC-104 using phonetics

  5. #5
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    The Elmore extractor spring isn't CS if that was the implication. Put one of his "extreme duty" magazine springs in the humidity cabinet and see how it turns out...

  6. #6
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    Quote Originally Posted by H Wyman View Post
    The Elmore extractor spring isn't CS if that was the implication. Put one of his "extreme duty" magazine springs in the humidity cabinet and see how it turns out...
    No, it is not CS. It fared VERY well, as you can see. I did not know what it was, nor am I too terribly worried, only that it does well, and it does.

  7. #7
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    Even a small residue of dishwasher detergent can cause a lot of rust. Obviously, the CS is much more sensitive to corrosion.
    "That thing looks about as enjoyable as a bowl of exploding dicks." - Magic_Salad0892

    "The body cannot go where the mind has not already been."

  8. #8
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    Detents aren't the same either on vismod guns. I learned this the hard way running high volume arctic training after my Gen I Magpul MIAD fragmented from the extreme cold and suppressor heavy blaster.

    Went to replace it in the host nation barracks, and noticed that the selector detent was corroding before my eyes, as in fizzling. Craziest thing I've ever seen environmentally on the AR15, and I've spent a lot of time with these guns from extreme cold conditions in Korea, to jungles of Panama, from coast to coast in the US, to the Middle East and Europe.

    WS6: Thanks for this thread. People that ask me what springs to go with can now have a place to look.

    Once again showing that the TDP guns have had every component raked over the coals through a series of testing and evaluation that most manufacturers don't know about, and don't care about.

  9. #9
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    Quote Originally Posted by LRRPF52 View Post
    Detents aren't the same either on vismod guns. I learned this the hard way running high volume arctic training after my Gen I Magpul MIAD fragmented from the extreme cold and suppressor heavy blaster.

    Went to replace it in the host nation barracks, and noticed that the selector detent was corroding before my eyes, as in fizzling. Craziest thing I've ever seen environmentally on the AR15, and I've spent a lot of time with these guns from extreme cold conditions in Korea, to jungles of Panama, from coast to coast in the US, to the Middle East and Europe.

    WS6: Thanks for this thread. People that ask me what springs to go with can now have a place to look.

    Once again showing that the TDP guns have had every component raked over the coals through a series of testing and evaluation that most manufacturers don't know about, and don't care about.
    What's interesting is that the mil-spec extractor spring rusted, but the spring made "by" SAW for NSW 15 years ago, did not.

  10. #10
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    Interesting test. I thought Colt was using a copper colored spring?

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