I got one of these scopes as a gift and it is awesome! It is so awesome I ordered a rail mount for it; got the mount a few days later and the mounting screw wasn't in there.:( HOWEVER... I wrote an email the evening I got it and Bill in customer service answered within 2 hours! :) He apologized and IMMEDIATELY sent a new one to me. I got it today, and it works perfectly. I have to say, a great product and maybe even better service. I am very impressed with both!