Yep - it's the anchor, with the conversion bridge at the other end.
I had been intending to put it on a P, but then this body came up.
I may find myself having to drill through and use bolts, or add an anchor/tailpiece, though.
One of the best live sounds I've heard was Phil in Toyah's band playing a Precision at Manchester Poly (I don't remember, but I'm guessing the amp was an Ampeg).