M4A4 | Buzz Kill is a high-impact rifle skin introduced on November 28, 2016, released in the Glove Case as part of the Glove Collection during the “Brothers In Arms” update. It has been painted in a “Gunsmith” style, with the Buzz Kill finish, a hybrid approach that blends patina-treated metal with precise custom-painted detailing. The result is an industrial, hazard-grade look: bold yellow plates, black accents, and technical markings that make the rifle feel like equipment pulled straight from a restricted worksite. Subtle scuffs on the steel are replaced by clean, engineered panel lines, while the bright warning color pops on the handguard and stock for instant readability in-game. In Factory New condition, the finish appears pristine, with virtually no scratches, edge wear, or fading, so the glossy yellow remains vivid and the fine mechanical details stay razor-sharp.