Does anyone know if the magazines interchange between the Walther P-22 pistols and the G-22 rifles. I have owned a P-22 for years and now I have just placed an order for a G-22. A few years ago, I would buy pistol magazines for approx. $17.00 to $19.00, now the Walther web site lists G-22 mags for $35.00. I nearly pooped my pants.