I had to do a lot of work to get this sight usable. I had to grind a heap of metal off the base plate to get it to sit straightish on my rifles tang and still put a few shims under oneside to get it up straight and not tilting off to the side. It wasn't my rifle that is on an angle the sight sat crooked sitting on the bench! Also had to grind a little off the staffs spring indent to get it sitting up perfectly vertical, drill out the eye piece hole as it was far to small for me to use and the lock nuts on the staff were not adjusted correctly leaving about 3mm of play in the adjustment on the staff thread to just move as it pleased. After all that work I now have a usable sight that does look the part on the rifle.