treated myself to a new trigger on my DIANA M52, never liked the shape of the TO1 fitted, the weight of pull etc was fine for a sporter but i got spoiled by the target trigger on my rim fire so decided to invest in one of Dan Kuengs steel replacements
fitting was easy enough although the washer to remove some of the slop from the sear is very small, fitting made easier by turning the gun on its side so it could be slid up the inside of the trigger unit and under the sear pin, which was pulled just out of its mounting hole
the trigger pin on my rifle needed to be polished down a bit as both pin and reamed hole in the trigger were 3.50mm, polishing the pin down to 3.48mm allowed it to slide in but stay where i put it, the washers fitted to the trigger pin are large enough to handle and sticking them together with some moly grease made stacking the required number under the withdrawn pin easy
trigger feels great top to bottom, face is flat and has none of the wobble of the original, trigger is also set back further and slim which allows my hand to hold the stock further down the grip in fact it feels good no mater how i hold the grip
still messing with the adjustments and will probably need a good long shooting session before i settle on a setup but is already breaking at about half the weight of the lowest setting that the original could and still retain a clean break
cost $82 delivered, now i know most of you can get rifles for that, but i cant, not cheap but it is very nice
http://www.blueline-studios.com/kuengairguns.com/compendium.htmlfin