Lego minifig compatible Custom SI-Dan Toys UMP45 Machine gun is finely detailed with a camouflage effect. The Heckler & Koch UMP (Universale Maschinenpistole, German for "Universal Submachine Gun") has been adopted by various agencies such as the U.S. Customs and Border Protection. Heckler & Koch developed the UMP as a lighter and cheaper successor to the MP5, though both remain in production. The BD23 silencer can be attached to the end of the UMP45 barrel.