I'm working on a game, and I'm making models on Blender for the sprites, the game is a gallery shooter. For the player, the sprite will involve 1 or 2 hands, and a gun.

I have a quick question, say I want to raise the arm while holding the gun, or even just doing a reloading animation, how would I achieve that?

I could just animate the armature, and move the gun separately, but chances are, they won't move in the same motions, unless I move the gun's position every frame, that would take a lot of time, there has to be a simpler and quicker way... Right?