Hogue's Piranha Grips are constructed of a high performance G10 G-Mascus material" which is a high pressure thermoset laminate consisting of multiple layers of woven fiberglass impregnated with an epoxy resin binder. This makes the grips highly resistant to wear and gives them a look similar to Damascus steel. This LE (Laser Enhanced) model integrates a 5 mW class red aiming laser into the grip that is activated by a pressure switch on the front strap. Precision fit for the Springfield 911.