The EGW Ruger American Rimfire scope base brings modernized mounting to a classic rimfire platform. This one-piece Picatinny rail installs directly onto your Ruger American Rimfire receiver using the factory scope mount holes—no drilling, no tapping, no gunsmithing required. If you're looking to upgrade your rimfire's optic setup with the flexibility to swap scopes or adjust eye relief without tools or headaches, this is a straightforward way to get it done.
Built from 6061 T6 extruded aluminum, the base is precision-machined to MIL-STD 1913 Picatinny specifications (±.002") and weighs as little as possible thanks to a milled center channel that runs the length of the rail. That means it'll work with any standard Picatinny or Weaver rings you already own, and you can dial in eye relief quickly without breaking anything down. The full-width cross-slots are gauged to mil spec, so mounting rings stay put and repeatable.
Installation is dead simple: the base drops into place using your rifle's existing holes, and EGW supplies everything you need—socket head Torx screws and the wrench to install them. The shop recommends 20 inch-lbs of torque and a small dab of blue threadlocker on those screws to keep things locked in.
Key Features
- One-piece Picatinny rail mounts directly to Ruger American Rimfire receiver
- No drilling or tapping required—uses factory scope mount holes
- MIL-STD 1913 Picatinny spec slots (±.002") accept any standard Picatinny or Weaver rings
- Machined from lightweight 6061 T6 aluminum with center channel for weight reduction
- Fast, simple eye relief adjustment between ring positions
- Includes socket head Torx screws and installation wrench
Specifications
| Brand | EGW |
| Compatibility | Ruger American Rimfire |
| Rail Type | One-piece Picatinny |
| Material | 6061 T6 Extruded Aluminum |
| Ring Compatibility | Picatinny or Weaver |
| Installation | Factory hole pattern—no drilling or tapping |
| Picatinny Spec | MIL-STD 1913 (±.002") |
| Recommended Torque | 20 inch-lbs |
| Included | Socket head Torx screws and wrench |
Frequently Asked Questions
Will this base fit my Ruger American Rimfire?
Yes. The EGW base is designed specifically for the Ruger American Rimfire and mounts using the factory scope mount holes on the receiver. No modifications to the rifle are needed.
What scope rings can I use with this Picatinny rail?
Any standard Picatinny or Weaver rings will work. The Picatinny slots are machined to MIL-STD 1913 specifications, ensuring a secure fit with rings designed to either standard.
Do I need to drill or tap my receiver?
No. The base uses your rifle's existing factory scope mount holes, so no drilling, tapping, or gunsmithing is required. Installation is straightforward with the included screws and wrench.
What's included with the mount?
The base comes with socket head Torx screws for installation and the wrench needed to install them. EGW recommends using 20 inch-lbs of torque and a small amount of blue threadlocker on the screws during installation.
