Re: previously completed dlc assignments won't unlock my weapons ive been using
OP I see that you are Premium on PS4 http://battlelog.battlefield.com/bf4/soldier/cliffrock-1988_/stats/193232537/ps4/
Go into your purchase history in the PSN store and redownload your BF4 premium file (sometimes it is corrupted during title updates or firmware updates). Then restart BF4 from a completely closed state (not suspended) and then try to use the weapons.
I recommend to redownload the premium file because on console in order to access premium expansions and the associated weapons the premium file must be physically present on your HDD in an uncorrupted manner. Also DLC weapons are physically contained in the expansion packs so if the premium file or expansion pack is removed or corrupted you lose access to the DLC weapons until the files are replaced or repaired.
Go into your purchase history in the PSN store and redownload your BF4 premium file (sometimes it is corrupted during title updates or firmware updates). Then restart BF4 from a completely closed state (not suspended) and then try to use the weapons.
I recommend to redownload the premium file because on console in order to access premium expansions and the associated weapons the premium file must be physically present on your HDD in an uncorrupted manner. Also DLC weapons are physically contained in the expansion packs so if the premium file or expansion pack is removed or corrupted you lose access to the DLC weapons until the files are replaced or repaired.