First off, we need to know what you are seeking. Do you want wood grips or rubber or even some other material? Your post just says smaller grips, but typically Hogue grips are soft rubber. The most common Python grips, especially for a typical blued 6" Python are wooden grips similar to Smith and Wesson oversized targets but flaring at the bottom. They were roundly hated back in the old days and now prized since Pythons went out of orbit price-wise.
