Hold on here, lets discuss the Trigger Plunger Spring a moment. Cutting this spring serves little purpose to reducing the overall trigger pull weight. It's purpose is to lift the disconnector lever and reset the sear when the bolt is fully closed. This spring only comprises 4-6 oz. of the total trigger pull measured weight. The mainspring and the positive engagement angle of the sear and hammer hooks account for most of the rest of total trigger pull. Reducing this spring tension can create problems with the functioning of the pistol and "failure to reset" situations.
Let me describe the term "Positive Engagement Angle," it means when the trigger is pulled the hammer actually moves rearward slightly before the sear releases it forward to strike the firing pin. This engagement method is used to prevent any slipping of the hammer off of the sear face by anything other than the operator intentionally pulling the trigger. Changing the sear angles by manually stoning either the hammer hook, or the sear face, without the proper calibrated jigs and training can create a potentially dangerous situation where the trigger may be released unintentionally. The VQ target sear and hammer have very slightly different engagement angles, almost imperceptible to the eye, this is why these are best for folks without the proper equipment to install as a "drop-in" aftermarket replacement. One doesn't have to install both components to achieve a better trigger pull. The sear alone will vastly improve the Ruger .22 Autopistol's operation while utilizing the factory hammer. Trigger pulls in the range of 2-2.75 lbs are typically enjoyed by folks who've used these products in their Ruger firearms.
Hope this helps.
R,
Bullseye