You can easily force drops in Warfronts

Want a weapon? Put your current one in the Void Storage and do the Warfront with a low ilvl one. Want new gloves? Do the same thing with your gloves.

What can't drop: Rings and Trinkets

This works because it tries to give you something you need (based on itemlevel). I'm not entirely sure if you can also do this if you have the higher itemlevel item just in your inventory, but I did the void storage just to make sure. I've forced 3 weapons to drop so far.

Have fun!