How to stop an animation?

Let’s say I have a pistol and a rifle, I start reloading my rifle, and switch to the pistol in the middle of the animation. How do I stop the animation on switching? (I have an animation montage for the skeleton of the player, easy to stop, and an animation on the gun itself with the muzzle flash - I’m trying to stop the muzzle flash animation on the gun, I don’t know how to do it and I’d love to get some help, thanks!)

Bump - please help me :upside_down_face: