[Arcc]

That is a good question. I can't remember where I saw it, but I thought I remembered them saying somewhere that the gadgets were reverse-engineered from lost logia. So in other words, they weren't lost logia themselves, but they used illegal tech in their construction and/or components?

Also, the jewel seed on that one unit was one of the same ones collected by Nanoha and Fate in the first season. Considering there are only 12 of those that didn't fall through the rift with Precia, there's no way that all Type IIIs were equipped with such things. Remember that Scags was taunting RF6 (and probably Fate in particular) directly by stamping his name right next to the Seed; it may not even have had a purpose in the drone other than to draw attention and say "neener neener remember this?"

Edit: Just pulled up that scene from episode 6. Immediately after identifying the jewel seed and Spaghetti's handiwork, Fate states that lost logia was used to manufacture the gadgets.