If I understand your reply correctly you think I am an author?  Not At the speed I type. I just need a little info on availability of a rear sight for my Krag, and a few other items such as source of ammo, is the barrel length measured from tip of the barrel to the end of the chamber. I am totally ignorant of the nomenclature used in describing things. That can be cured by knowledge. I Thank very much for the reply!!    Pat Armstrong  KF5YZ (I am an extra amateur radio operator) 8-) :).