For all you 1911 shooters out there. I just dropped a Cylinder and Slide 5 piece hammer and sear kit in my 1919 Colt. It now has a better trigger than my Wilson CQB and Baer Concept X. Had to do some fitting on the thumb safety but other than that it was drop-in. Took it to the range and did all the safety checks, 2 round, 3 rounds, 5 rounds each 5 times no hammer follow. Works perfect. Just too easy. No stoneing required.