These sturdy, versatile mounts easily attach to various AR-15 style weapons. Picatinny style rails accept Weaver Top Mount Rings to secure your optics. Product Features Versatile flat-top or carry-handle models Single-rail Bases accommodate both Weaver-style and Picatinny rings Constructed of rugged 6061-T6 Aluminum Type-III hard coat anodized finish Minimal weight and bulk