Attach weapon to actor

In the docs it shows this as a method of permanently attaching the mesh to the other mesh, but all that does for me is add more previews.

And I am very new at all this, so blueprinting is out of my skill level, and no matter what I try I cant get it to correctly attach to the socket. I am using a player start node so anything else i try just seems to break it, I’m not sure what part of the entire project you want an image of. I want to attach a gun to 2 models, and have all instances have the gun. But I don’t know how to go about it. I just need a guide that details how to do that.

Basically, whats the simplest, fastest way to get the gun to appear in game without changing everything ive already got?