They should come after, since they're higher level, more expensive, and more powerful (though you wouldn't know from the in-game display that they do the same blast damage as Longbows in addition to the kinetic).

nms 9 Aug 2015:

I misunderstood how fragmenting weapons work. They generally don't do the blast damage. They are still higher level though.

nms 18 Sep 2017:

I fixed the order in 1.8A3.