Yes, you can modify them, but would I trust them for a match or my life, no way. Buy em and sell them/swap them for the .40 mags or save your money and look for the .40 mags. Personally, I would buy the .45 mags and build/buy a .45 at some point, always need an excuse to buy a .45. good luck, DC
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front sight is good, front sight is good!
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front sight is good, front sight is good!