There are no special tools, as Butlers said, to use to properly and carefully disassemble a Krag. It is imperative to have the right tip for the screwdriver for each screw that you remove. There are different size screws from the trigger guard down to the rear sight screws that require a change of tip. Two things about using them. With the correct and sharp tip for the screw, press in firmly and turn very slow with continued pressure downward. This is where people mess up and lose grip and bugger the screw. Also, clean out the screw slot well. A dirty screw slot will not allow a firm grip deep in the slot. I have to do this frequently on some of my screws that haven't been loosened for 100 years or more! Sometimes, if the screw is stubborn, cover it well in a thin penetrating oil and allow it to sit for a day or so. I rarely have to do this.

Go slow in removing the hand guard from the barrel also. This should come off after you remove the lower stock from the receiver and barrel. Sometimes the receiver and barrel is stuck so remove it slowly and up cleanly from the stock or you might break off some of the delicate stock wood. Many Krag stocks have old cracks in them. I reglue small cracks all the time to stabilize them.

But, to remove the hand guard, remove the rear sight and slide the hand guard forward on the barrel until it touches the front sight. Then it can be removed from the barrel. Many hand guards are cracked and can worsen when off the barrel. It helps to put a nickel or quarter in the clips under the hand guard when it is off the barrel to keep the spring force from cracking the wood.

These are just a few suggestions in taking a part your Krag. Go slow and ask questions if any problems.