Here is a quick how-to guide for the new barrel system so you are quick and efficient as before!
PC Users that use Mouse and Keyboard
Press (F) to open the barrel, highlight the item you want to grab with a (mouse point), press (F) and viola! Done deal! Easy peasy eh? :)
Xbox and PC users who use Controllers
Press (X) to open the barrel highlight the item you want to grab with the left stick, or the D-Pad, then press (A) and voila! Done deal! Easy smeasy eh? :)