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Had these on my Gen 1 STI Mags. They worked awesome. I just purchased a Limcat magwell and had to replace these with TTIs. They definitely have been used. Only marks on them are from normal use and are purely cosmetic. One of them has some minor filing up top as an attempt to fit it in the new magwell but I stopped after I realized it just wasnt going to fit.
$160 shipped. If you're in the Phoenix area and shoot at any of the local clubs (Rio, Cactus, PRGC) then I can give them to you in person.