The Sightmark Ultra Dual Shot Pro Spec Reflex Sight features 4 reticle patterns with adjustable brightness to help you aim in low-light conditions. The aluminum body with a metal protective shield and a matte black finish is durable and shockproof, and the nitrogen-filled sight is water-resistant for reliable use in the elements. The Interlok™ internal locking system holds zero, while the adjustable, quick-detach weaver mount provides simple attachment.