The screw that locks the Zero-Stop on my BEAST scope stripped. I called NF and was told this is a "hand burnished" part and that I had to send the scope back for repair. However, taking a VERY close look at the problem, I discovered that the screw is only about 3/16" long and only engaged 3 threads, but the hole it goes into is threaded all the way thru. I went to ACE Hardware and purchased a 2-56x3/8" replacement for .60 cents and was shooting a match two days later. If you have a BEAST, I would recommend replacing the screw before you have problems with it.