FINAL DUTY (CAMPAIGN) Didnt get M249

I believe you need to complete all 3 endings? Let Valkyrie be destroy, Irish killed, and Hanna killed? 

I had the same issue and I finished all 3 at all 3 levels. Like you said, all you get is the M249 that you can use in multiplayer mode. In My opinion, one of the issue is that Playstation SW kept screwing with my game files (Got Data corrupted message 5 times thanks to Sony SW).

So, I moved on to multiplayers about 2 months ago and never looked back.

If this message helped you or direct you to the right direction, just click the XP box at the bottom right of the message.

XP = Thanks for helping, trying to help, or what a funny guy.
Accept as solution = This solved my problem!

Sometimes it can take a little while for Battlelog to update. You can usually push this by finishing a multiplayer match, or making a loadout change and saving.

You need to complete each ending for different weapon, I was doing ending with Irish as the last one, got the achievement on origin but didnt get the weapon. Is there a way to contact origin for them to solve it? I mean like live chat would be usefull, otherwise I think I will just do it again, really sick of doing the same mission for the forth time.

You can contact EA Support at http://help.ea.com/en/battlefield/battlefield-4/. They can chat with you live.

Personally, I moved on to Multiplayers until Sony comes out with a patch that actually not corrupt save game data as I completed the Final Duty campaign 4 times and the files went kaka. (I know the work around to not have the files corrupted again but Multiplayer is more FUN!)

If this message helped you or direct you to the right direction, just click the XP box at the bottom right of the message.

XP = Thanks for helping, trying to help, or what a funny guy.
Accept as solution = This solved my problem!