No, it does not.
This product is only the pouch and dose not contain the IFAK kit, that will have to be purchased separately.
No, the carrier is sold separately.
https://www.opticsplanet.com/comp-tac-reflex-ifak-carrier-system.html
Yes, the T. Rex Arms ITRK can fit in this.
This includes the med roll and carrier, but no medical supplies.