Got mine on wake island. Rush defender, last base. Go back to the place where the rockets are, shoot across the water on attacking enemys. They expect fire from the bunkers in front of them and are often easy targets for you shooting from an other direction.

I have unlocked all weapon assignments, now working on the dog tags (life saver, wrench wielder,...). when do camo assignments unlock? do i have to complet all dog tags and jack of all trades first??

no, maps are to small for rush mode.

Happened to me with the m16 a3. Suddenly only had 3 shot burst, i checked if i used accidentally the m16 a4, but it was the a3