Ah, I see! One of the mods I usually play with seems to disable to option to disarm the drone, so I didn't notice that was an option! Now that I'm checking it out in vanilla, I see that you can put several different weapons on it.
Is there a specific list of weapons the drone accepts, or does it simply look for weapons that fit specific criteria? I'm wondering if it's possible for it to equip mod-added weapons or not. And if not, what's the full list of weapons it accepts?