Mount an Optic on Your Ruger-57
This Optic Adapter Plate supports the use of Burris FastFire and Vortex Viper/Venom red dot sights on the Ruger-57 pistol. The plate is precision CNC machined from 6061-T6 aircraft aluminum with a matte black hardcoat finish for strength and durability. Simply place the adapter plate onto slide and secure it using the two #6-32 screws provided. Tighten the screws firmly (30-50 in-lbs.) using a Torx T-15 wrench (not included). Install the optic onto the Adapter Plate by following the sight manufacturer's mounting specifications (sight not included). This Genuine Ruger Factory Accessory is made in the USA.Ruger Optic Adapter Plate for Ruger-57 Specifications and Features:
- Manufacturer Number 90720
- Includes plate and mounting Screws
- 1.700" long x .975" wide
- Weight .2 ounces.
Firearm
Ruger-57
Optics
Burris FastFire and Vortex Viper/Venom
Enclosed Vortex Venom DeltaPoint
I ordered the Ruger-57 adapter for my Vortex Venom 6 MOA enclosed micro red dot. The adapter fit perfectly to the firearm but did not fit perfectly to the Vortex. I choose to modify the alignment tabs (bosses) to get the DeltaPoint Pro footprint to line up with the adapter. Fortunately, the Vortex came with various sizes screws, and the correct size is 6-48 with a screw length of 9.03mm. Better suited a RMR footprint micro dot.
May 5, 2026