Ditch the FAK.
Duct tape,toilet paper,some ibuprofen, and benadryl for a day hike is plenty.
This is the kind of thinking that gets you into trouble. you don't need a huge FAK, but "just a day hike" can still lead to serious injuries. I have seen and treated lots and lots of examples.
Some kinds of terrain can produce more injuries than others, as can some activities. perhaps that is a better way to go about your planning. i am a great fan of elastic bandages, some serious sterile bandages, and the ability to improvise (bandannas are great). Most important is your training, which is weightless....
Yeah, I said ditch the FAK.
Apparently many of yall have no idea what a .5 AMK FAK contains while defending it.
From the AMK website:
The Adventure First Aid .5 contains basic supplies to treat cuts & scrapes, insect bites, and blisters.
Bandage Materials
10 Bandage, Adhesive, Fabric, 1" x 3"
1 Bandage, Adhesive, Fabric, 2" x 4.5"
2 Bandage, Adhesive, Fabric, Knuckle
2 Bandage, Butterfly Closure
2 Dressing, Gauze, Sterile, 2" x 2", Pkg./2
Medication
1 After Bite Wipe
Survival Tools
1 Mini Rescue Howler Whistle
Wound Care
6 Antimicrobial Towelette
So, what exactly is so much better about the FAK he is carrying for a day hike vs just using what he already has, ie duct tape, TP, and bandanas?
For day hikes, most folks are better off with meds and improvising any needed bandages. I can cover a wound with TP and a bit of tape. Can you make Motrin or Benadryl?