Taran Tactical Innovations(R) Competition Base Pad is designed for compatible Glock 9mm and .40 S&W magazines. The extended base pad increases magazine capacity by up to 3 rounds for .40 S&W or 4 rounds for 9mm applications and features aluminum construction. This configuration features a Coyote Bronze finish and provides an extended magazine base for compatible Glock magazines.Key Features Designed for compatible Glock magazines Compatible with 9mm and .40 S&W applications Adds up to 4 rounds for 9mm magazines Adds up to 3 rounds for .40 S&W magazines Competition-style extended base pad design Aluminum construction Coyote Bronze finishTaran Tactical Innovations(R) manufactures firearm components and accessories for competition sporting and professional applications. The company develops performance-oriented products with an emphasis on functional design durable materials and firearm compatibility. Taran Tactical Innovations products are manufactured with attention to fit consistent operation and practical performance.