Founded in 2008, Primary Arms® Optics is a leading innovator in tactical optics, offering a comprehensive selection of rifle scopes, prism scopes, red dot sights, optic mounts, and accessories. Their Advanced Combined Sighting System (ACSS®) is a high-performance reticle solution to the challenges of modern marksmanship, distilling complex mathematics into intuitive holdovers that enhance your speed and precision. All Primary Arms Optics products come with a comprehensive lifetime warranty. (less)