The only component that qualifies as "used" is the IFAK pouch & cover, however, most of them are in excellent/like-new condition as well. See photos for details and examples of complete USGI IFAK units.
USGI Multicam IFAK Pouch With Insert
US Army IFAK Insert for Individual First Aid Kit - Venture Surplus - USGI
The only component that qualifies as used is the IFAK pouch & cover, however, most of them are in excellent/like-new condition as well. See photos
USGI IFAK II Military Individual First Aid Kit Medical Field Gear Complete Pack
USGI IFAK II Complete Medical Field Gear Kit Individual First Aid Trauma
USGI IFAK II Military Individual First Aid Kit Medical Field Gear Complete Pack :: コレクション > ミリタリー > Current Militaria (2001-Now) > Original Items > Personal, Field Gear > First Aid, Medic
IFAK V2 Standard (Individual First Aid Kit) | Tacticon
Military Issued Multi Cam IFAK II Complete Kit
IFAK: Individual First Aid Kits
USMC IFAK Coyote Individual First Aid Kit Utility Pouch USGI – imedsales
NEW USGI IFAK II Military Individual First Aid Kit Medical Field Gea - LockNWalkHarness
ARMY OCP SCORPION IMPROVED SOLDIERS FIRST AID KIT IFAK II w/ MEDICAL SUPPLIES - Centex Tactical Gear
Graverobber™ IV Pouch
USGI IFAK Individual First Aid Kit Medical Field Gear Complete Pack