The Warne Mfg M9T3M Maxima Steel Bases are based on the widely appreciated Weaver design, renowned for its strength and adaptability. These mounting systems are amongst the best you can find in the market today.Maxima Steel Bases have a low profile, providing your firearm with an aesthetic boost. In addition, these bases feature a full width recoil slot in every base. The importance of this feature lies in its ability to let the recoil control keys of Warne Rings achieve maximum bearing surface.