I would like to help you on this. What caliber and year is your EAA/Tanfoglio? This has some bearing on which Caspian mags would be useful to you. I have owned 7 Bren Ten's and 4 Caspian's. The slide stop cutout is completely different, the mag catch opening is 1mm higher, and the mag floor plate is totally different. That said, I'm using EAA mags for a custom Caspian that's I've been working on.