I dont see the option in the salvage matrix but I have heard you can retrieve a mod but it destroys the weapon in the process. Is my EGO rating not high enough yet because I dont see the option anywhere? thanks. Also, how and where do you start getting tier 2 mods because almost all of my modes are tier 1. Do you get more tier 2's and 3's later on in the game?
I don't remember there being a lvl limit on retrieving weapon mods. But when you go to the matrix it should appear I know sometimes it glitches sometimes. So try it a couple of times and let me know if you can get to it.