This is a Hi-Viz Sight known as the Litewave, model RG1022.
HIVIZ(R) LiteWave(R) Front and Rear Sight Combo for Ruger 10/22 rifles. Fits Standard models with 18.5" barrel" Carbine and Takedown models. Rear sight is elevation adjustable and foldable. Both front and rear sight includes Green" Red and White replaceable LitePipes.
Features:
Interchangeable front and rear sight combo
Green red and white front;Green and red rear
