The primary headshot bounty is glitches for weapons like the Vex because it's a fusion rifle.
English
#Help
-
It's not glitched, vex, NLB and universal remote are all special weapons with a perk that allows you to equip them in the primary slot, they have always been special weapons, the grimoire cards for each of them are in the special weapons section, thus is why they don't count towards the bounty