I have a RIA gi 1911 and iv been looking onto putting a extended beavertail grip safety in wilson combat has a drop in Beavertail safety that is designed to drop in to a gi frame without having to cut the tangs off the frame and I know I would need to switch to a commander style hammer I was just going to buy one and take it to a gunsmith to have the hammer installed and fitting done to the safety if necessary since w.c. says is a drop in safty but I know thats not always the case. Looking more on their website I saw they have what they call there value line hammer and sear. I have seen things online that say they are drop in parts and you can install them and no gunsmithing is required but is that true? I just can't really see something like a hammer and sear being just drop ins and being completely safe and reliable. Has anyone just put thsee in and they work fine? And if so what about the disconnecter and thumb safety? Will they still work with 100% safety and reliability? Thanks for any and all info.