well it depends on which grips u are going to get. I have seen Kury's stilletto grips that has black nylon sleeves already in the grips... some dont have'em.. it's no biggie if the grips has no sleeves. u just unscrew the end cap on ur stockers. cut out ur stocker grips with razor blade but dont cut the sleeves itself... then glue / install the new ones over the stock sleeves.