WIN WEAVER STYLE BASE SX4 SX3 SX2 MATTE Machined weaver style rail for use as a base on your SXP or SX2. Very versatile for ring positioning. Solid precision for accuracy. Tough and ready. A premium scope base for your Winchester shotguns. These bases accept Weaver style scope rings. The design gives you maximum flexibility for positioning your scope rings and the placement of your scope overall -- something very important with a shotgun. The machined alloy part won't add unnecessary weight, but the overall rigidity of mounting will give you the kind of precision you are looking for. Accepts weaver style scope rings only.