This grip extension replaces the magazine base plate and retain all other factory components.It does not alter the capacity of the magazine but provides better comfort and control by adding approximately 1/2" of gripping surface.It comes two extensions per package.Note: this model only compatible with ruger lcp and lcpii in 380 cal.Caliber: 380 ACPCapacity: RugerModel: Grip ExtensionMaterial: PolymerModel Fit: LCPBrand Fit: Ruger