Heavy Attack Drones fit their name. After the Light and Medium flavors, these are the ones that have been taking serious steroids, and think Siege Launchers are the minimum you should carry. These are what the Big Boys fit, and drop out of their drone bays, to play with frigates, cruisers and BCs. Think of what a frigate fires, glue it onto a large drone body, fit a chunky WD on it, and point it at your enemy. Just remember, when it's shredded it into space-dust, to call it back and tuck it up -- they're relatively expensive and you don't want someone else scooping them up.