Leupold 170489 Standard 2-Piece Base for Ruger American Rimfire

Leupold Standard Base System for Ruger American Rimfire

The Leupold Standard (STD) base system represents one of the most versatile and proven mounting solutions available to the rifleman. This particular configuration is purpose-built for the Ruger American Rimfire platform.

Key Features

• Two-piece steel construction in matte black finish
• Precision-engineered design for consistent, repeatable performance
• Lateral adjustment capability via rear windage screws during bore sighting
• Pivoting front dovetail ring for easy alignment and adjustment
• Compatible with Standard height rings (available in five different heights)
• Ideal for standard calibers and rimfire applications

Design and Function

The Standard base system is engineered to work seamlessly with Leupold's Standard 1-piece or 2-piece bases. The front ring's pivot design allows you to make lateral adjustments using the rear windage screws—a practical feature when bore sighting your rifle before heading to the range.

This is a no-nonsense mounting system built for hunters and shooters who demand reliability and precision without unnecessary complexity. The matte black finish resists glare and complements most modern rifle platforms.

Compatibility

Designed specifically for Ruger American Rimfire rifles. Verify compatibility with your specific model before purchase.