keeznuts

I'm looking for a thin buttpad for a 12ga Montefeltro stock, as thin as possible, preferably a metal or plastic cover, not a limbsaver or vented recoil pad. Does anyone make such a thing? I assume the 20ga Montefeltro pads are not compatible with the 12ga Montefeltro stocks? I had some Montefeltro wood customized to fit my M1 Super 90, I would prefer to keep the LOP as short as possible.