Okay, am I missing something? The OP asked about subbing a uniloc insert on a revo to a Mezz united insert, correct? If so, I am not understanding the previous 2 replies. Unless I am mistaken, He is holding a Mezz insert in his hand and is looking to install it in his Revo, which has a Uniloc insert. Re-installing a uniloc will not do what he wants, and buying the Revo with the radial joint will not either, as he wants the Mezz united (5/16x14 modified) insert, presumably to fit a butt that has the Mezz pin? Just looking to clarify, I know it's late here on the east coast.....lol
Dave