I'm trying to collect every item appearance. I don't know how many I have left, but I've gotten to the point where I have less than five open spaces left in my inventory. It's very frustrating to go back out of the game every couple matches to delete duplicates. It's made worse by the fact that the "new item" icon shows up on every item, no matter how long I've had it, so there isn't an easy way to see what just dropped.
Thanks for listening.
edit: I'm at 59/60 gear inventory. Since I'm missing two of the special weapon parts, does this mean there are more than 60 item types in the game? That would be really disappointing.