Animation Rigging - Slapping Mechanics

I want to use the animation rigging package to control the player's arm so that when the player swipes, the enemy player gets slapped by the arm. Any ideas on what constraints I should use? It should look like a natural slap, with the arm going back to its original position after.

 

By using the animation rigging package you can find the two bones constraint. That will do the work that you want i think.