Xur's location and inventory, January 17-20

He is touting grenade launchers, helmets, hand guards and leg guards this week.

Get the information you need before resetting on Tuesday, January 21.

Xur inventory from January 17th to 20th

The exotic weapon this week is a grenade launcher, colony. This Void grenade launcher will launch small robot spiders instead of standard explosives and chase nearby enemies. Even when you hold it, it reloads itself, and according to the legend of Destiny 2, the spider will break into the room by itself.