Be very careful when fiddling with the safety on a 73 or 66. Some years ago, a shooter lost an eye because he removed the safety spring. As he was levering up a round into the chamber, it was half way in when he somehow touched the trigger, causing the hammer to fall with enough force to strike the firing pin and explode the primer. The unlocked action was blown back instantly, shearing the firing pin retainer and driving the pin through his right eye. The need for speed here ended his shooting for some time, if not for all time. Beware the light springs, they can fail on you. Just remember that if they were such a great, safe idea in all cases, the maufactures would use them to save costs. Same with piano wire springs.