These are both Strider SMF knives designed for different needs. The one at the top is the SMF CuBe (Copper Beryllium). From what I’ve read it was designed to meet military requirements where the blade is non magnetic and non sparking. It’s made from CuBe (Copper Beryllium) alloy, and not a coating on a steel blade. The bottom knife is the SMF NSN military model. Please add any comments, I would like to know more about the history of these knives, and especially the Copper Beryllium model. Thanks KT!
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