Re: Walther mod. 9
If you decide to remove those grips, note that the right grip requires a special tool. I know of no source, but they are not hard to make, or a jeweler's watch back tool can be modified. I wouldn't try with some improvised tool as there is a good chance of messing up the grips or the gun itself. Once the right medallon is unscrewed and that grip removed (and the magazine removed), an ordinary screwdriver can be used to unscrew the left grip screw from the inside.