Johnny is correct that there's no good way, and all of the above will work. I can push them off with upward pressure from the bottom using my thumbs, and after I take it off I never put it on again. There's really no need to have them today unless you're needing them to protected your front sight blade from getting dinged, and most of us would never put them through that kind of abuse the military might have done. I can see having them installed for a collector grade that you aren't going to take out shooting though.
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