These units replace the magazine base plate and internal locking plate.They do not alter the capacity of the magazine.These units provide better comfort and control by adding approximately 1/2" of gripping surface.(two extensions per package)Caliber: 380 ACPCapacity: Grip ExtensionFinish: BlackModel: Beretta, Kel-Tec & Bersa 380Material: PolymerType: Grip ExtensionModel Fit: Beretta 3032/Kel-Tec P3AT/BersaBrand Fit: BerettaCapacity: Grip Extension