I was in my LGS today just browsing and decided to look at an ed brown customized 1911. So the worker hands it to me and said not to cock the hammer back with my hand or to let the hammer down with my hand just pull the slide back and dry fire it if I was going to do anything. He told me that cocking the hammer or releasing it with your hand was bad on it. I've never heard this and was wanting some insight on the matter so if you know why this is bad on it please tell me why and what its bad on. Thanks.