>>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).
>>The Adapter Plate is 1.700"
long x .975" wide and weighs
.2 ounces and is a Genuine
Ruger Factory Accessory is
made in the USA.