Ruger Customer Service in Prescott gets an A+ from me ...AGAIN. I bought some extra (after market) mags for my wife's Mk III only to find out that it's actually a MK II. Then, my quick mind realized that the MK III mags could be used in my brand new MK IV Lite IF I could obtain the correct magazine base plate (s). It appeared that the base plates were not a separate item (per the schematics) but I called and asked for help. I told the nice young lady of my stupid error and asked if she could help me. She said" 'hold on a minute and let me see if I can conjure-up something for you'. A few minutes late, she is back on the line and asked me if I could live with a coupla "used" base plates that she found for me. I said: 'of course I can.... let me get my credit card out'. She said, they're FREE and on the way to you as we speak.... They arrived and look brand new to me; and they fit and work as hoped for. God Bless that nice young lady..... RUGER, are you paying attention.... ??? MANY THANKS for hiring the motivated people in Prescott.