The Weaver #401S is a one-piece top-mount aluminum base designed for factory-drilled Smith & Wesson K/L/N frame revolvers. Machined to tight tolerances, the base provides a secure, snug fit and a stable platform for Weaver-style scope rings. The unit is finished in a silver matte and is made from aluminum alloy to balance strength and weight for handgun optics mounting.
Key Specifications
- The model is listed as #401S by the manufacturer.
- The construction material is specified as aluminum alloy.
- The finish is specified as silver matte in the product attributes.
- The base is a 1-piece top-mount design for receiver attachment.
- Intended fit is listed as S&W K/ L/ N Frame for factory-drilled revolvers.
- The mount type is specified as to receiver for direct attachment.
- Required rings are Weaver-style; rings are not included.
- Dimensions are listed as 1.25 x 2.70 x 4.70 (manufacturer data).
- Individual dimension values are listed as height 1.2500, width 2.7000, and length 4.7000.
- Weight is listed as 0.12 (manufacturer data).
This one-piece Weaver base gives revolver owners a straightforward, reliable foundation for mounting optics without permanent modification to the firearm. Its precision machining and aluminum-alloy construction deliver a balance of rigidity and light weight, making it suitable for sighting, target work, and field optics setups on compatible Smith & Wesson revolvers.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.
