If I am incorrect it wouldn't be the first time and I don't mind admitting it. Nevertheless, you may be the one who is still in error.
The following was posted on RFC a while back by someone who is quite knowledgeable about not only the KKJ-T rifle but also it's trigger. His RFC moniker is Prairiewalker. His description leaves no doubt as to whether it is or isn't a set trigger, as it is about 3 lbs when unset and down to mere ounces when set. But perhaps your experience trumps his. Of course Ryan can tell us what trigger it is, that is whether it has the plunger or not.
In regard to the trigger, right now your rifle has a very nice match quality 3lb two-stage trigger. Now take the end of a key or a screwdriver and gently, without scratching the blueing, rotate the slotted piece inside that thing in front of the trigger guard anti-clockwise about one quarter of a turn. The thing you rotate will pop out about half an inch under moderate spring pressure. You will then have a very nice 4oz two-stage trigger. Yes, four ounces, or less! Have fun!!!
It is really a single set trigger as opposed to the more commonly known double set trigger. Actually this Walther trigger is unusual because most ordinary single triggers are just some levers actuating a catch mechanism that releases the cocked firing pin against spring pressure. Your Walther trigger is a set trigger because the trigger itself is cocked and is not merely a catch holding the firing pin.
To see this in operation, remove the bolt and insert your finger into the receiver and push the trigger sear down with your finger until it cocks. Now try firing the rifle (without inserting the bolt) in the normal way by sqeezing the trigger and you will find that the trigger "fires" when it releases rather than just moving.
P.S. I would give my right arm to own that rifle since I traded my Walther KKJ-T with the same trigger except that then I would not be able to shoot it!
See h t t p://www.rimfirecentral.com/forums/showpost.php?p=3428725&postcount=2