Yep, it takes me probably a minute at most to switch my barrels. All I need is a torque head bit and torque wrench for 30 ft lbs.
Like spife said like any other prefit, after getting dimensions from action the first time when the switch lug got installed all I have to do is order a barrel from WTO now.
You don’t buy a prefit and get it turned down, you buy a barrel and have it shipped to WTO or buy an in stock barrel from WTO and have it cut for you action and shipped to you.
In my opinion it’s one of the best switch barrel set ups because you do not have to remove the chassis or anything from the rifle and no barrel vise.