Ruger 90690 Picatinny Rail 30 MOA 5.25" Black Anodized - Fits Ruger Precision Rimfire

The Ruger 90690 Picatinny Rail is a factory-original scope base built specifically for the Ruger Precision Rimfire rifle. This one-piece Picatinny/Weaver mount is precision-machined from billet aluminum and finished in black hardcoat anodizing for long-term durability in the field. At 5.25" long, it provides a full-length Mil-Spec 1913 mounting surface for rings and optics, replacing the factory rail for a stronger, more repeatable platform on the receiver.

The defining feature of this base is the built-in 30 MOA cant, which angles the optical centerline and adds usable internal elevation adjustment inside most riflescopes. That extra elevation is especially valuable for long-range rimfire shooting, where the limited dial travel of traditional scopes can run out of adjustment long before the bullet reaches distant targets. The result is a cleaner shot-call budget for rimfire long-range, silhouette work, and NRL22-style competition, where every click of internal elevation matters.

Installation is direct: the rail drops onto the Ruger Precision Rimfire receiver and is secured with the included four TORX mounting screws. No adapters, spacers, or gunsmithing modifications are required. Rings are not included, letting the shooter choose a ring set that matches their optic tube diameter and preferred mounting height. Sold as one rail base.