My first time to share a tutorial to the epic games community. A quick how to tutorial to create a socket for your static mesh and use it for your level. Also, how to use sockets to attach objects to bones. Once set up, you can attach your objects, weapons, and other actors to the socket from the level or in the blueprint.
https://dev.epicgames.com/community/learning/tutorials/yye3/how-to-use-sockets-in-unreal-engine