Are these suppose to exist???
I ask because I noticed discrepancies between characters. For example, Drake and his grenade launcher. If you fire it in the air, you can fire it immediately as you land for a double shot. However, if you try that with Jak's peacemaker it doesn't work.
My experience is actually limited to Drake, Jak, and Cole, so perhaps someone else can give more examples. Right now I'm just going to assume this was another over nerf of Jak for being too good in his original form.