The Warne M902879M Maxima Matte Black Steel 2-Piece Base is specifically designed for Weatherby Mark V Magnum 9 Lug rifles, excluding the .240 WM. This mounting system offers strength and versatility, constructed from steel to provide a significant upgrade from other 2-piece bases. The low profile design allows for a sleek look without compromising functionality.Key FeaturesMount Type: Designed for Weaver-style mounting systems.Included Components: Mounts to receiver using 6-48 inch length screws.Compatibility: Fits Weatherby Mark V Magnum 9 Lug rifles (except .240 WM); does not fit Mark V Standard 6 Lug or Vanguard models.