Board Thread:Questions and answers/@comment-37146533-20181009161515/@comment-27306930-20181014053625

Proposition #2. Our friends over at Modworks.blogspot have an interesting idea - the Sabot dart. Take your favorite dart, yank off the head, then use a piece of mechanical pencil eraser to make a new head inside the dart.

Just use a drop of Plumbers Goop or contact cement to fasten it in place. Clearly, someone has a functional misunderstanding of the meaning of "sabot". But conceptually this is an interesting idea that kinda meets your single-piece criteria Cignus.

Dunno. Maybe worth a try ?