From the Remington Service Manual:

Stock

Listed below is the recommended method of restoring the finish on the Nylon stock.

Scratches: Use finely powdered pumice stone and oil. Rub with felt pad. Wipe clean and dry.

Abrasion: Use Du Pont auto rubbing compound. Rub with cloth pad. Wipe clean and dry.

For Polishing: Use Du Pont auto waxes.

To Clean Checkering: Use stiff tooth brush.

My biggest fear is when I die my wife will sell my guns for what I told her they cost....