please add a option for multi item selection so we can sell item in bulk/all together. It's really pain to select item one by one (like unnecessary weapons and stuff) and sell them . Selecting all items (specific item ) and selling it at once will save time and energy and won't be pain. 

Seconded! That or group weapons by quality range. Being able to list/send/donate a 49.3%, 49.5%, and 50% m-16 all at once would be a great QoL change. Wasn't an issue before weapon quality was introduced.

I was about to post here asking for the same feature. I'm accumulating a ton of items I'd like to sell. Right now, it's just a pain and very time consuming. 

wow this would be the biggest update imo