Pachmayr's Deluxe Revolver Grips in the new G10 designs. G-10 material is a fiberglass-based epoxy resin laminate. It is an extremely tough and durable material that is impervious to moisture, weather or chemicals, making it a perfect material for handgun grips. The multiple layered construction allows the use of different colors to be added to the grips, which create attractive patterns as it is machined.