Pearce Grips PG-26XL GLOCK Model 26/27/33/39 Grip Extension They are made from High Impact Polymer and withstand drop tests at temperatures from -20 F to 350 F Fits GLOCK model 26/27/33/39 They form the next logical finger positioning feature to provide control and comfort without sacrificing concealability These units blend with the contours and texture of the handgun giving a factory appearance Provides magazine identification via Mag-Track for those that rotate magazine usage.