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 semi-auto grips"" creating attractive patterns as it is machined. Their Pachmayr G-10 Tactical pistol grips are available in two textures"" their coarse Grappler pattern or fine checkered"" and two color patterns"" green/black and grey/black.