One of our new people asked "What exactly is the best way to remove the thumb safety on a 1911?" This is what works for me to remove: Unload, check, and check again that the firearm is unloaded. Put any and all ammo away from the area you are working in. Remove the slide assembly. Cock the hammer. The safety has two "positions". Off safe, safety engaged. The safety has to hit the "sweet spot" to be removed correctly. That is found by moving the safety in small amounts from the maximum travel "up" and going off safe. [ame="http://www.youtube.com/watch?v=CriE_5Xzo34"]http://www.youtube.com/watch?v=CriE_5Xzo34[/ame] Although the video is mainly talking about a grip safety, it demonstrates also how to remove and install the thumb safety.