Tech Sight's MINI200 Adjustable Aperture Sight for the Ruger&reg; Mini 14 and Ranch Rifle 5800 Series Easy installation. Standard .062 Aperture Includes parts needed for Ruger Mini and Ruger Ranch models manufactured after 2005. GI type rear sight for your Ruger&reg; MINI 14 and RANCH RIFLES 5800 Series Easy Click Adjustments on Elevation and windage