Engineered to Picatinny specs and adding an optimal ½-inch of rail height, our new Weaver Picatinny Riser Set is a sleek, lightweight option for mounting a wide range of optic and ring combinations. This new riser set also features an additional mounting slot so you can position your optic exactly where you need it. Made of aircraft-grade 6061-T6 Aluminum with Type-III hard coat anodized finish, this accessory is built for duty. Adds 1/2-inch height to Picatinny Rails Designed to Picatinny specs Minimizes weight and bulk Longer rails add extra mounting slot Provides optimal mounting height for a wide range of optic/ring combinations on AR-style rifles