The angle on the pistols is way off. When you hold them comfortably they are aiming way high. You have to bend your wrist way down to shoot straight.
They aim directly forward relative to the hand tracking.
There is no difference in direction between pistols and larger guns being held with one hand.
Unless you are not using Oculus, in that case the hands will be wrongly aligned, that will be fixed by the SteamVR version, which will be uploaded soon.