Quote:
Originally Posted by Hapworth
The factory method of adjusting single action trigger pull without affecting double action is altering the angle at which you cut the single action hook (engagement surface) on the back of the trigger; obviously, you do not touch the single action sear on the hammer.
This assumes you have enough surface left on the hook to cut and not ruin it.
Check the Kuhnhausen manual for complete instructions.
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This method pre dates the availability of rebound springs in a variety of weights and is not advised today. Because stoning the sear on the trigger to an "assist angle" places the wear point on the Hammer Sear at it's very tip. Long term use of a tregger set up using this method will lead to Push Off with a subsequent need to replace the hammer.