Is anyone using the new type A.R.M.S.#18 Scope Mount on thier M1A ? The new type has a full length rail. I would like to know how it is working for you. I am thinking about buying one because it is the lowest mount that I have seen , but have to wonder if it might be so low that the brass might not clear it .Does the brass hit the scope ? Does the brass ever hang up in the action ? I would appreciate any comments on the subject. Rich