Lol well you didn't really answer my question at all but I shall assume it's just a bug.
But thank you and my friend I'm sure you're "real survivor" and all it's just that after my 6 day's of play time on the Xbox version of this game. And the many characters I've had that have been fully looted with pretty much every load out in the game I've been from elektro to tisy looting everything in between multiple times on the same character in lobby with no less than 20 at time I'm pretty familiar with the process and the flow of the game.
And the issue is the same with the M68 I don't know if you are saying this with only having played the pc version, but on my Xbox one s it's a little bit different sadly.