I have used 4 of John’s “Extreme Service” triggers in 3 of my pistol’s and one I did for a friend, I couldn’t be happier with them and their quality. The one I used in one of my Colts took very minor fitting, just a few strokes with a file, the one in my Professional took a little more fitting for a perfect fit, and the one in my Les Baer Thunder Ranch took the most fitting. As anyone familiar with Les Baer pistols knows, his guns are built to very tight tolerances and the extra fitting to achieve a perfect fit, was not unexpected . The 4th trigger I installed in my friend’s Colt; his being a MKIV Series 80 built during the “strike years” at Colt (1986-1990), when their build quality varied greatly. It took absolutely no fitting whatsoever and had a fit that you would think took hours. None of the triggers required any fitting of the adjustment screw, they all have perfectly “crisp” trigger pulls with absolutely no over travel. I also installed one of John’s “Retro ignition sets” in my friends pistol, very impressed with the quality of those parts also, extremely well made. When finished, the old Colt had a terrific trigger pull of around 4 1/2#, perfect for a carry gun, in my humble opinion.
I have a couple more projects in mind to do, they will, without doubt, be done using John’s parts!