Leupold pwr's. They are a all steel weaver style ring. Super strong, but super heavy. I use em on my varmit rifles, but have switched to talley ultalights on my hunting rifles to reduce weight. The talleys are a one piece base and ring set up made out of aluminum and have proved just as good as anything out there. Although I havent tried them on annything larger than a 300 weatherby. Good luck.
"A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms shall not be infringed."