Ruger 90623 Picatinny Scope Base Black Anodized Aluminum - Mark III/IV & 22/45

The Ruger 90623 Picatinny Rail is a factory 1-piece 1913-style scope base machined from aluminum and finished in a rugged black hardcoat anodized coating. Designed as a direct mount to the host pistol's receiver, it provides a standard Picatinny/Weaver optics interface for Ruger rimfire pistols.

This rail is purpose-built for Ruger Mark III, Mark IV, and 22/45 pistols equipped with factory pre-drilled receivers. The low-profile 1-piece design allows continued use of the pistol's original iron sights while delivering a secure, repeatable mounting platform for red dot sights, lasers, or magnified optics. Three mounting screws are included for installation. Please note: this model does not fit the Ruger Mark I or Mark II pistols.

Lightweight, durable, and finished to match the host pistol, the Ruger 90623 is a clean, factory-direct optic-mounting solution for the Ruger Mark III/IV and 22/45 platform.