Right now there are no guns, but all the big streamers seem to think they'll add them eventually, and I wouldn't doubt it. There are less guns in this game than there were in WAW. Right now its all cosmetics, XP boosters, and unlocks you could buy with your tokens you get from challenges and orders. I got an MG42 variant that gives me 15% more xp per kill. The launch of this game has been a train wreck though. I can't play with friends more than one match without getting booted to the main menu.
I beat the campaign and it didn't disappoint. Overall it's top 3. The end was a bit anti-climatic in how it was done, but it definitely had several memorable moments.