Compatible with factory P11 magazines, the Kel-Tec® P11 Grip Extension is an easy-to-install polymer grip extension, designed to deliver improved comfort and control with your P11 pistol. This genuine extension also offers improved shock and corrosion resistance, without weighing you down or inhibiting your draw. Better yet, this polymer extension is easily removed when maintenance and cleaning are required. What are you waiting for? Order now! Made in USA.