This is a Hi-Viz Sight known as the Litewave, model RG2245LLW01.
HIVIZ(R) LiteWave(R) Front Sight for Ruger 22/45 LITE pistols. Fits models with adjustable rear sight. Includes Green" Red and White replaceable LitePipes.
Features:
Interchangeable Litepipe design
Includes green red and white LitePipes;Front sight
