Re:
What happened to your other one?
That's the newer Delrin rods (plastic) that they switched to in 1994 at some point,before that they where Aluminium.
I know it's 94 they switched as my bough BITD early 94s have Alu rods and I've devices and had many with the plastic.
You have steel stanchions though?
94 MAG21 had aluminium, not that that matters.