I have not shot any two stage triggers. But I am curious, I read where they give a total pull and frist stage pull. So when you pull the trigger for the first stage what happens to keep weapon from going ahead and firing. I am starting my second build and I am looking for some input as to what to expect from a two stage trigger. The gun I am going to build will be an AR-15. Not sure but it may be a .308 for longer shots on a range. I will probably install a scope as my old eyes are not as sharp as they once where.