Ah So Deska
(Atz Japanese for "No S^&% GI). Now I understand. Peacemaker Specialists are, um, not quite on top of that, I don't think. The Recoil Shield is the entire frame surface that faces the back of the cylinder. Everybody else on the planet calls that little hardened disc a "Firing Pin Bushing." I could be wrong and Peacemaker Specialists just might be correct but the world at large call it the firing pin bushing and we, collectively, could be all wet.
And, now that I understand your question, I don't have a clue. It's ben so long since I had one apart, I simply don't remember. Memory of a Gnat. A real small Gnat. Pietta have them though, even though they don't list them as a separate "part." Its primary purpose is to prevent cratering of the recoil face at the firing pin hole which allows the Primer to remain backed out of the cartridge and jamming the gun. Calling it a "Recoil Plate" actually makes sense, I've just never heard it revered to as such. Hummmmmmm.