The Midwest Combat Rifle Rear Flip Sight is a low profile flip-up sight that uses a single intermediate aperture for long-range precision and close-range rapid engagement. The dual locking detent springs provide added reliability and crisp positioning. The base is made from 6061 aluminum and hardcoat anodized, and the sight is made from an ordnance grade phosphate finished steel. Attaches to a Picatinny rail and flips up to Mil-Spec height. Adjustments are in .5 MOA increments per click for rifle or .65MOA for carbine. Weight is 1.2oz. Made in the USA.