I have one of these on my Kimber Hunter 22 squirrelly rifle. I really like it. Versus a Leupold VX1 2-7x33, contrast and flare resistance was better with the Weaver, and the adjustments worked well too. The Leupold had mushy feeling clicks and would require half a dozen shots to walk to a new impact point when moving the POI. The Leupold did have longer and easier eye relief, the Weaver is approximately 3", a little shorter than the specs. The RV9 Weaver I judged to be at least equivalent to its Leupold counterpart, the 3-9x 33 AO EFR, for $150 less. I would guess that if there's anything defective that the Leupold warranty would be better to deal with, but the Weaver is built in Japan by Light Optical Works and their products hqve an excellent reputation.