Grappling Missile
this projectile was actually a tool and not a weapon, despite its name. The grappling missile was a projectile that could be fired at a stationary target, with a strong cord trailing behind it. When the missile impacted with its target, it buried its head deep into the material, then extended heavy-duty tines to lock the missile in place. The user could then climb up the cord to reach a lofty location, then retrieve the missile for later use.