1girl, assault_rifle, gloves, goggles, goggles_on_headwear, greyscale, gun, headset, helmet, holding, holding_gun, holding_weapon, long_hair, looking_at_viewer, m4_carbine, magazine_(weapon), military, monochrome, open_mouth, rifle, solo, trigger_discipline, twintails, united_states_army, vertical_foregrip, weapon