Kongsberg Defence makes NASAMS (used to protect air space around the White House), and the Penguin, JSM, NSM missiles. They also build a bunch of other stuff like the RWS which is kind of well known. https://en.wikipedia.org/wiki/Protector_RWS
Norway exports about $1B of weapons, missiles etc through Nammo and Kongsberg Gruppen.
What's your source for this? I was also under the impression Norway had a large arms industry, but from what I can find online, it's fairly small with stats from $50 - 300 million/year