The Heckler & Koch MP7 is a compact submachine gun designed for close-quarters combat. It fires the 4.6x30mm cartridge, which offers low recoil and high armor penetration. The MP7 is lightweight, made primarily from polymer and aluminum, making it easy to handle and carry. This firearm features a retractable stock and a top-mounted rail for optics and accessories. It is used by various military and law enforcement agencies around the world due to its versatility and effectiveness in urban environments. The MP7's design allows for both semi-automatic and fully automatic firing modes.