Yes, and plenty. When you reach higher SC (street credit) even shops will sell legendary weapon with 6 slots. And eventually you'll find a legendary pistol, with 1900 base DPS, 100% crit chance and 200% crit dmg, plus 400% head shot dmg. Sweet, isn't it?
Also there's a trick, the RNG system roll stats when you inspect an item , that's when the stats window pop up for the first time before you pick up the item, so the trick is to create a manual save when you see the small orange cube icon BEFORE approaching the item .
then you can approach and check the stats. If you don't like it, simply reload the save file and check again, the RNG will roll a new set of stats for you, repeat and you'll eventually get there.
This trick is especially useful on clothing items, because a random legendary piece can roll with up to 4 slots for shirts and jackets, or up to 3 slots for head, face and shoes. If you're really lucky, it can even (very rarely) roll with max slots AND a +15% crit and 30% crit dmg legendary mod pre-installed ;-) don't get too greedy.