These units replace the magazine base plate and retain all other factory components. They do not alter the capacity of the magazine. These units provide better comfort and control by adding approximately 13/16" of gripping surface. These extensions will not fit any other .380 firearms. (Two extensions per package.) Provide better comfort and control by adding approximately 13/16" of gripping surface. These units blend with the contours and texture of the firearm and have a factory appearance They are made from High Impact Polymer and withstand drop tests at temperatures from -20 F to 350 F. They provide control and comfort without sacrificing conceal ability. Two extensions per package.