Black Diamond has issued recalls for certain specific carabiners and certain specific runners, due to a small run of manufacturing defects. The below 2 links will give you the details and how to check your gear.
If you have carabiners and/or slings in the recall, Black Diamond will replace the defective ones at no cost to you. Instructions are in the links:
The carabiners include both solid gate and wiregate types, along with some screwgates.