Blackpowder Products Weaver Style Durasight Z-2 Alloy 2-Piece Scope Bases for Muzzleloaders Durasight Z-2 Alloy 2-Piece Scope Bases For Muzzleloaders (Weaver-Style) - Black Fits All CVA, Winchester, Traditions & New Frontier In-Line Muzzleloaders - Black Color