Rapid Fire 1

They were patching challenges maybe that's caused something?

Also there had been a thing where you had to wait until a new match to unlock it.

If you restart the game after a match and it's still bugged it might be a problem that needs to be reported.

I have exactly the same issue, and have restarted  the game multiple times and no luck....

Try joining a match. The update to the challenges meant I'd already completed Rapid Fire 2, but it didn't unlock the next stage or reward until I joined a match.

Yeah, Elliot is right, i also thought there was a bug, all the challenges unlock with the start of a new match, not the waiting lobby where people join, the beginning of the match everything will unlock.

I also have this issue. Restarted the game multiple times and joined and finished multiple matches, but still locked.. 

Many thanks man, it work for me 😁

I've already finished Rapid Fire 2, and Rapid Fire 1 still keeps the weapon locked.

I also have the same problem with Rapid Fire. It says it is completed but the kord is still not unlocked yet. I have this problem for like a week now. cant really progress further and I also worry that some other challenges could be bugged too...

Still not working im level 76 did al assault challenges all weapon challenges completed yet still cant unlock kord. I unlocked the warfighter variant by using it in redsec but cant add any attachments because the challenge shows completed but still locked. Reset the game. Played 10matches of tdm,breakthrough and conquest, no luck I re installed the game still no luck. Cleared the cache on my console still no **bleep** luck. Log in today to see the gah **bleep** kord in the store and a big update and still no **bleep** fix to the **bleep** rapid fire. This is the most bugged game I've ever played in my entire life. Will be getting a refund for this crap game

aint happening for me. Still not unlocked after a full week and me playing the game almost daily