I installed a Pistol Dynamics Comp II Expanded Ignition Set in my TRP today. The parts went in slick as a whistle and improved upon the already very good stock parts. The trigger pull is in the three pound range with a slight amount of creep. The new parts are beautifully machined and the hammer looks good on the gun. The parts are in the white, so I will have to have them blued sometime. As far as the installation I can recommend the parts, but they need to be proven on the range first.