Re: MG 42 is locked and shouldn’t be

@kemper4444Hi please see the following post:
https://answers.ea.com/t5/Bug-Reports/Missing-level-up-unlock-Rewards/td-p/8466626/jump-to/first-unread-message

You might be lucky when you play practice vs players , play until ranked again . This might do the trick to unlock the weapon.

If that ain't working the current advice is to contact https://help.ea.com/en/contact-us/ and start a chat session with a support agent.