Mesh dissapears when animation is played

I’m in unreal right now and for some reason my animations aren’t working i have it set up that when the character shoots an animation plays on a play anim montage but for some reason the mesh just disappears, its a simple turn pitch up 50 degrees down 50 degrees

Any help would be greatly appreciated!

Imported animations must be in the wrong scale.

If nothing’s wrong with the animation data it could also be a bounds issue. Try increasing the bounds scale to like 3 on the gun mesh and see if that makes a difference.