35% lighter than standard aluminum rings; Integrated recoil lug and dual-screw clamps maintain zero even under the harshest recoil; Precision CNC machined and topped with Cerakote to ensure flawless performance in any environment; STANAG 4694 interface allows for better return to zero and rigidity; Fits both Picatinny and Weaver style bases, works best with full width cross slot mounts; Available for 1", 30mm, and 34mm tube sizes; in Low, Medium, & High; Finish: Matte Black / Dark Earth; Designed and manufactured in the USA