They are being made in the Bosch & Lomb factory, I believe. However, the glass is comparable to Loupold 40mm lenses and I've only had one P-2 lose its zero, and that only by 1/2 moa at most-always to the right, for some reason. Never while hunting or carrying, so it may be a parallax issue, or my glasses. I've seen several snipers use it over here in Afghanistan and in Iraq, on M14s that have been accurized. They've told me they love it because of the 1st rd hit capability on multiple targets. I think most of the complaints I've read are due to not practicing with the scope and not following instructions. And they are unconditionally guaranteed. The Shepherd folks rebuilt my 1985 model Shootist scope for $15.00 shipping and handling. I've just bought a P1A for my .300wm and checked the ballistics for my loads at 8000 ft. It will match to within 6in to 1000yds with a zero of 225yds and that's minute of elk in anyone's book. For those of us who can't afford the high-dollar rifles and scopes that's good enough for me.