Ruger Optic Adapter Plate 1.70" - 90723

This Optic Adapter Plate supports the use of JPoint MRD. & Shield RMS red dot sights on the Ruger-57 pistol. The plate is precision CNC machined from 6061-T6 aircraft aluminum with a matte black hard coat 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). NOTE: the extra screws provided in the package are meant for installing the JPoint sight only. Shield sights should fit this base without modification. The Adapter Plate is 1.700" long x .975" wide and weighs .2 ounces. This Genuine Ruger Factory Accessory is made in the USA. Manufacturer Model Number: 90723 Manufacturer: Ruger Model: Ruger-57 Optic Adapter Plate Type: Accessory-Rings/Mounts/Bases Item Type: Accessory Shipping Weight: 0.0 Feature: Optic Adapter Plate Feature: Fits: JPOINT/S&W SHIELD/SIG Optic Adjustable Objective: false Optic Reticle Illuminated: false