The Original Mini Sight, Remastered. Crafted from nylon glass-filled polymer, the SMS2 offers the choice between a hard-dipped acrylic lens or a crystal-clear glass lens for enhanced scratch resistance, ensuring it stands up to the rigors of everyday shooting. Its iconic low-profile design allows shooters to co-witness with standard iron sights, thanks to the unobtrusive frame and rear iron sight notch.Features :Nylon Glass-filled PolymerD-Shaped LensCompatible with Night Vision