The UMP-45 Gunsmoke skin was added to CS:GO in the Arms Deal update on August 13, 2013.
This skin features a worn, desert camo paint scheme with shades of tan, brown, and olive green. It has scratches and other signs of wear, giving it a gritty, used look.
As one of the original CS:GO weapon skins, the UMP-45 Gunsmoke remains a fairly popular and affordable choice among players.