Weapon Pack 3? And Map Question

[Burgins]

Hello all,

 

I purchased Weapon Pack 2 and 3 today and while the weapons for 2 are in my Store, the others (including the .30-06) are nowhere to be seen. Do I need to uninstall and reinstall or something?

 

Also, a side question: if you join a multiplayer host for a map before you own that map, does it glitch that map's trophies for you when you own it and play yourself? This is mostly a question out of paranoia. 

 

Thanks!