It goes on the end of the top plate to protect it from wear due to the carrying strap. There should be one each end. I have no idea how they are attached. Glue?
It was held in place by the two plastic pins. When they broke loose, it leaves two holes in the edge of the top plate. You can cover them with some gaffers tape until you can get it fixed.
It was held in place by the two plastic pins. When they broke loose, it leaves two holes in the edge of the top plate. You can cover them with some gaffers tape until you can get it fixed.