Myself I made my own,I based it on the one from the movie "THE Hunted"I found the right type of steel on the net,then looked up the how to"s and did it myself it is very functional and strong,but ialso carry a good medium sized folder with a strong locking mechanisim.I also carry 2 to 3 smaller very easlly sharpining pocket knves for varios tasks(u never can have to much in this dept.if your survival depends on it and of course how much weight u are willing to cary.