I unlocked my Riven Mod for one weapon; got a mod for an entirely different weapon.

[SeriousSmith]

Upon completing the War Within Quest, I was given a Riven Mod. I unlocked it on my Dread Bow and I got this mod:



Those "awesome" stats aside, I have a problem. I can't equip it on my Dread mod because for some stupid reason, it unlocked it for the Laser Rifle Sentinel Weapon. Needless to say, I am very angry that I went to the trouble to unlock a mod for a very specific weapon and ended up getting a mod for an entirely different weapon that I can't even use. 

Has anyone else had this happen to them? Please let me know... 

Edited November 16, 2016 by SeriousSmith

[Commander_Snake_Eyes]

The weapon is random, it's not decided by the weapon you have it equipped on when you unveil it.