Is "Lead Zappin" broken?

I killed two Spartans in PvP already while the gun was out, one I was pretty sure was a kill via bullet (not the shocking thingy). Anyone else having problems with this?

It requires a kill with a Disruptor in PvP.

I managed to complete that challenge with a kill with only the disruptor, not sure if the challenge is absolutely strict that you have to only use the weapon to kill without outside damage such as an AR

Regardless, these type of kill challenges are currently bugged and will sometimes not count progress
it’ll probably be fixed …probably.

I’m aware that if you switch the weapon, the kill won’t count (e.g. shooting the Rocket and then switching).

I’ll give it a few more tries I guess.

I’m having the same issue with Lead Zappin