Reimport Mesh from marketplace weapons?

Hi I bought the prototype Weapons pack from the marketplace and I am trying to change the yaw so it matches the default weapon I am replacing however when I try to reimport the mesh I can’t find it. In my projects its just an uasset file but of course I need the original FBX file to be able to reimport. How can I solve this problem?

You can export an FBX from the engine - right-click the asset and click Asset Actions -> Export. Then you can reimport and change the rotation settings.

Thanks that worked perfectly