The Weaver 401S is a one-piece aluminum scope mount designed specifically for Smith & Wesson K, L, and N frame revolvers.
- Type: One-piece revolver scope mount
- Compatible Firearms: Smith & Wesson K, L, and N frame revolvers
- Material: Aircraft-grade aluminum, silver anodized
- Ring Compatibility: Weaver-style rings (not included)
- Includes: Mount base only, rings sold separately
- Note: May require fitting or gunsmithing for proper installation
