Looks more like the shape of a 7mm hunting tip.
Not long enough body to be a missile.
Just saying.
Be careful going to the actual swamp after Delta.
Symbolism is their thing.
A symbol is all their wannabe god is.
On Nancy's shoulder created by looting and mobs fetching is the outline of a 6mm or 7mm hunting tip. Not the casing just the tip. Serious hunters load their own buy buy the tips.