I do like the factory grip size, but they are a little slippery. Not trying to hijack the thread, I have a compatibility question. Will 4516 factory grips fit a 4513TSW in the 7 round configuration? I'm guessing the 3913 grips would be too narrow and the 4013 would be too wide? I have to retrofit and cannot find 4513TSW factory grips anywhere. Thanks.