Hakko scopes and their life time warranty also the back up in the U.K is rubbish. The scope at 600yds should use 16.5moa from a 100yds zero this one uses 12.5moa It has 30 clicks 7.5 minutes per revolution. When speaking to the dealer he offerd every possible excuse not to get involved with the scope. At £450 not a cheap scope by any means, but as I have found out the guy who sells them also sells AR15s, a friend brought one for £1200 that was crap also. So is warranty as long as you can see the guy who sold it to you.