Well they made it a rope for gmod but i was thinking of a chain. A long chain you can swing on. But only one sense you can easily retract and fire another one. It would look like the grav gun except with no model. You shoot a brick and you can swing on it. And if possible make it so your hand go's straight up and it's left handed. That way it wouldn't look wierd when the "rope" or "chain" is attaching your hand to the brick.