I did the Whisper mission on Legend, and when I shot the first oracle - It showed up that I got "White Nail 2, 3, and 4. Everyone else that I did it with, when I re-ran the mission, got different options (1 got White Nail 2, while the other got 2 and 3).
And, when I go to craft it, only "White Nail IV" shows up as an option. And while I can change the magazine and barrel with IV inserted, I cannot change the stocks.
No mention of it in the TWID this week, so I am wondering if it is just me, or if it is a known bug?