Leupold Winchester 70 Exp Pre-64 Cross Slot Matte Scope Base - 2 Piece - Leupold Quick Release Weaver mounts are every bit as rugged and dependable as the Leupold optics they're intended to secure. With a huge variety of mounting systems, for nearly every type of firearm under the sun, you're sure to find the perfect match for your firearm and your style of shooting.