Near Manufacturing. I have them on several big boomers all one piece base and rings. All have been flawless and extremely durable. Not to mention that Richard will take the time to make sure you have the right set up for your particular rifle and scope.I'm pretty fond of Tikka rifles knowing how well they shoot. And I'm also getting the itch to start this long range stuff. I'm looking into getting a T3x Varmint stainless (I'm lefty and they don't make it in the blued version) in 6.5 Creedmoor.