The M249 Nebula Crusader is a high-detail, realistic light machine gun with a futuristic military aesthetic. It features a sleek, angular design with a predominantly matte black finish, accented by vibrant neon blue highlights that glow faintly along the barrel and stock. The weapon's surface includes intricate engravings of celestial patterns and a custom 'Nebula Crusader' insignia on the side, with a slightly weathered texture to suggest field use. The bipod is retractable, and the ammunition belt is visibly loaded with glowing blue-tipped rounds, adding to its distinctive appearance.