"Last summer I bought a pair of rings for my CZ 550 in 416 Rigby from you, I must say they have done everything you claimed they would do. My Nikon African scope would return to zero after taking it off and on the rifle a dozen times. After they earned my trust I took them hunting in Burkina Faso for some very serious game, on each follow up I would remove the scope to gain access to my express sights." "Thanks again for a great product that's made in America. I will trust my life to them again this July on a elephant in Zimbabawe." Best Regards, Steve Tylinski Great Falls,MT