Stage with rifle to pistol transition

[jtc556]

I am working some stages for a local match and would like to include a transition in a couple of them. The shooter would start with an empty rifle that would simulate a malfunction. At the buzzer, the shooter will come up on target and get a click then transition(using a sling). Once the pistol targets are cleared, the shooter will reholster and then load the rifle and engage the rifle targets.

Are there any safety concerns that jump out at anyone?