How do I switch between scorestreaks once I've obtained them? I mean, during match of course. I know that on the XBox you use the D-Pad, but can't figure out how you do it on the PC.
There are different buttons in the controls/key-bindings that use different score streak rewards. It has been a little while since I played but I believe it is the "Special Action" 1–4 that you press for score streak use.