RAPID FIRE 1 Assignment Does Not Unlock KORD 6P67

Hi, I currently play Battlefield 6 on Steam and I have the following issue: Rapid Fire 1 assignmet has not unlocked one of my assault rifles which is KORD 6P67.

I have completed all Rapid Fire assignments but the first one (red circle in the first image) has not unlocked KORD 6P67 (green circle in the second image). But Rapid Fire 2 and 3 assignments properly gave me the other two weapons which are NVO-228E and L85A3 (in the second image).

All of following methods failed to solve the issue.

1. I fully rebooted my PC.
2. I repaired the game via "Verify integrity of game files" feature on Steam.
3. I restarted Battlefield 6 a couple times.
4. I played several matches after finishing the Rapid Fire 1 assignment; even finished the other two Rapid Fire assignments.

I hope you address and solve this issue. Please let me know if there's a way that may work. Thank you!

My Steam ID: 76561198107312865