The Ruger Optic Adapter Plate is a slide-mounted plate built to add red dot compatibility to the Ruger-57 pistol, brand part number 90720. It supports Burris FastFire and Vortex Viper/Venom red dot sights, and is precision CNC-machined from 6061-T6 aircraft aluminum with a matte black hardcoat finish for strength and durability. Installation is straightforward: place the plate on the slide, secure it with the two included #6-32 screws torqued to 30-50 in-lbs using a Torx T-15 wrench, then mount the optic to the plate following the sight manufacturer’s own specifications.

Key Specifications

• Fits the Ruger-57 pistol.
• Supports Burris FastFire red dot sights.
• Supports Vortex Viper/Venom red dot sights.
• Precision CNC-machined from 6061-T6 aircraft aluminum.
• Finished in matte black hardcoat for strength and durability.
• Installs with two included #6-32 screws.
• Torque spec is 30-50 in-lbs using a Torx T-15 wrench (not included).
• Plate measures 1.700 x 0.975 inches (length by width).
• Optic mounts to the plate following the sight manufacturer’s own specifications.

Frequently Asked Questions

What red dots does this plate support? Burris FastFire and Vortex Viper/Venom sights.

Does this include mounting screws? Yes, two #6-32 screws are included; a Torx T-15 wrench is needed but not included.

Buy the Ruger Optic Adapter Plate

Add red dot compatibility to your Ruger-57 with this plate from Ruger, part of our red dot mounts lineup. Order it from our Lubbock, Texas gun shop for fast, direct shipping right to your door.