A submachine gun first manufactured by German arms company Heckler & Koch in 1999. Its name, Universale Maschinenpistole, means "Universal Machine Pistol".
A slab-sided weapon, lighter but bulkier in comparison to the H&K MP5 it was designed to supplant, the UMP is equipped with Picatinny accessory rails, a skeletonized folding buttstock, and is available in three calibers: 9mm (H&K UMP9, distinguishable by its curved box magazine), .40 S&W (H&K UMP40), and .45 ACP (H&K UMP45). Both the UMP and MP5 remain in production.
