100% Risk Free, Lifetime Warranty The Monstrum Tactical medium profile Picatinny riser mount is designed for the mounting of scopes and optics, allowing for optimal sight placement and for clearance over front sights. 0.8 inch in height and 5.7 inches in length and with a Picatinny standard rail mount, it will accommodate all Picatinny or Weaver standard scopes, red dots, or sights. It secures and detaches quickly via two thumbscrews, with no tools required. Crafted from lightweight 6061 grade aluminum, it weighs a mere 5 ounces. Includes: 13 Slot Medium Profile Picatinny Rise Mount Materials: 6061 Aircraft Grade Aluminum Compatibility: AR-15, Rifles with Picatinny rails Weight: 5 oz Length: 5.7 in Height: 0.8 in Color: Black Warranty: Lifetime