Yes they should, the M9 and the 92FS are 99.98% identical. Typically, one is made in the USA, the other is made in Italy. There is an edition of the 92FS that is 99.99% identical to the M9 in that the dust cover is straight parallel with the slide/barrel and made in the U.S. whereas the Italian version has an upward slanted dust cover. Shouldn't make any difference in regards to holsters unless you go custom.