"... please elaborate further on "some problems".
The only issue I had was DA travel of .70" with peak load of 10.5 lb.
And the other pk's I've tried all seem similar, even those made in 2011.
The folks who need the pk the most tend to have weaker fingers.
My SA trigger was fine: .12'' takeup, 4.5 lbs peak, .07'' creep (takeup to fire).
The DA mechanism is separate; for when you can't **** the hammer.
DA was .06'' takeup; 10.5 lb peak; .70" travel (from takeup to fire); and uneven feel.
This is acceptable for a first shot, unless the user has a weak or injured finger,
and would have trouble cocking the hammer.
Cocking the pk with one hand is much easier than with my Bersa 9, which also has
a long and heavy first shot. I am unable to cause recoil malfunctions in either the
pk nor the Bersa 9, which is one reason I can recommend these two guns.
If you have some gun with an easy DA trigger, then it's likely DAO.
In the gunshop, the pk DA will seem long and heavy; just check that it works for you.
The DA mods for my wife were not easy; and they are not recommended.
picasaweb.google.com trigger stuff
------The rest here is a bit off-point -----
Last year I whined about the low trigger bar corners. Higher and smoother corners
would shorten the travel, improve smoothness, and lower peak finger stress (the
hammer spring has less windup and the finger has less travel). But the firing pin
energy must be sufficient, so the hammer energy is for the Umarex engineers to control.
Reducing my DA trigger travel was unauthorized reduction of hammer energy.
The DA sear slips when the trigger bar corners are cammed down to the point
where the center of the bar slips off the hammer strut. The only easy mod was
to smooth the rough (stamped) corners of the trigger bar; just the high rough spots.
But that increased trigger tip travel by .03", to .75", and the peak load was still 10.5 lb.
modified parts drawing
One fix to reduce travel and peak load would be to braze shims on the trigger bar corners;
with uncertainties. I noticed that the hammer strut had enough vertical play to make a difference.
So I made a brass shim, .015" thick, and tightly formed it through the sear housing
channel in a full loop, with the loose end trapped under the hammer spring end.
The brass shim limits vertical play of the hammer strut, causing earlier slip of the trigger
bar from the hammer strut, so the travel is now .56", and the peak DA load is 8 lb.
The ratio of sear engagement to trigger travel is very high; over 10 to 1 in this case.
My parts drawing shows the added shim, and note-9 is on trigger travel.
I can't recommend owner mods, but Umarex might consider DA trigger travel,
as long as hammer energy remains high.
my pk measurements
There have been rare cases where the barrel was not fully seated
within the chamber block for brazing. A check for this is the protrusion
of the barrel through the slide port.
The distance from barrel end to the slide should be less than 1/8" (< 3mm).
.