Power of the Balrogs and Elven Kings

[Kirinki54]

Originally posted by Comic Book Guy

Now if it was a proper memory, it would be around about the same design would it not?

No, it was not really a proper memory or a replica of the original Grond, but more of an honorific from Sauron to to his old Master Morgoth.

The later Grond was far from a mace or hammer, it consisted of an enormous battering ram wrought in black steel and suspended on chains between a construction of huge girders.
(The girders are my own speculation; the text doesn´t say so.)