The Warne Magazine Extension provides increased capacity and enhanced grip for Glock 17/22 pistols with +3/2 round capacity increase and durable black anodized finish.Warne Magazine Extension for Glock 17/22+3/2 round capacity increase options availableMachined from 6061 T6 aluminum billet for strengthType 2 hardcoat anodize finish for abrasion and corrosion resistanceErgonomic shape with finger grooves for better grip and magazine strippingTorx head screw and washer retention systemDesigned and manufactured in the USAPerfect for competitive shooting law enforcement or personal defense applications where increased magazine capacity and reliable grip enhancement are essential for optimal performance.