UMP45 and UMP9 from Girls' Frontline HD Wallpaper

Two anime girls are shown. One girl with long gray hair points a gun at another girl with long silver hair. A speech bubble above the silver-haired girl contains a heart and question marks. A speech bubble above the gray-haired girl says "You". The background is dark blue with text "GIRLS FRONTLINE" and "DNUOF NOT 404" at the bottom.