Sorry no pictures, but its basicly a action wrench and a wrench for the barrel/lug. The cost should be no more then chambering and setting the headspace together with soldering the lugs and rebluing the barrels. And the wrenches offcourse.

You take the action out of the stck, fitt the action wrench to the action and the barrel wrench to the barrel and turn the barrel off the action. Then you take the other barrel and turn it onto the action in a reverse manner and fitt the stock again, done. They are turned on tight but not as tight as an ordinary barrel, and the wrenches can be made so they are allign when the barrel is turnd in completly.