Changing to primary weapon while walking crouched has no animation.
https://www.youtube.com/watch?v=fWAelW-8Z8o&feature=youtu.be
Changing to primary weapon while walking crouched has no animation.
https://www.youtube.com/watch?v=fWAelW-8Z8o&feature=youtu.be
Having launcher equipped.
Going in prone position causes launcher (and all other weapons) to be holstered.
Going in to crouch position.
Start walking, and while walking change to primary weapon