Well built. could be a little more refined. - Warne Mountain Tech 1 Inch Scope Mount Rings

Application for these was a rail on a Barrett Fieldcraft. Solid & well built, I have no complaints about their performance thus far. The threads for both the crossbar & upper halves of the rings seemed pretty gritty. I flushed everything with a little spray gun cleaner, followed by air and a wipe down then a drop of light oil and that improved things. Cleaned them again and applied a drop of blue loctite, installed, and all’s been good since. Reason for a 4 star vs 5 was due to their cost I felt that these should be ready to use out of the box with perhaps only lapping being necessary.