Bond Arms LBABL300327FEDMAG: Bond 3\" barrel makes your Bond Arms Derringer into a small package that packs a serious punch. So whether you are looking to improve the conceal-ability of your standard Bond Arms Derringer, give your derringer a different look or expand the caliber capability of your favorite conceal-carry firearm, you can be sure this Bond Arms accessory barrel will perform with the style and reliability you expect from Bond Arms.