Ncstar MRUHS1022 Ruger Style10/22 See-Thru Scope Rail Mount, comes in silver it attaches to your receiver with existing holes and allows you to install a scope, laser or light and still see your iron sights.
RUGER 10/22 WEAVER BASE SCOPE MOUNT SILVER SEE THRU
LENGH (INCH) 4.60
Limited Lifetime Warranty :YES
Comes with all mounting hardware made for Ruger 10/22 weaver base scope mount see thru for iron site use.