Blender 2.8 FPS animation to UE4 Part 2: "Pistol Bone Constraints"

In this video we setup our bone constraints for the pistol. This allows us to move the slide/trigger/hammer and such only in the ways that its suppose to move to make it easier for us to animate and prevent us from doing something stupid. ... https://www.youtube.com/watch?v=aFdADh6Etw0