This is strictly commentary and I am not saying that anything in Waynes book is not correct. But I don't understand why a sear in any fire control system would be made of relatively soft metal. Just the fact that the hammer sear surface has the hammer springs force bearing on the trigger sear, dictates that the sear surfaces should be hardened. Secondly, I know some light pull trigger systems ate attributed to sear angles or compound systems, but many are light due to being engineered for minimum engagement of the sear surfaces. And third,the McGee "set screw" is mounted to the solid receiver, so if it fits snugly and is loctited, it should provide consistent sear engagement. Just my opinion.
