Includes: Slim Profile Series Offset Picatinny Scope Mount Materials: 6061 Aircraft Grade Aluminum Compatibility: AR-15, Rifles with Picatinny rails Weight: 5.00 oz Diameter: 30 mm Length: 5.50 in Base Length: 3.00 in Color: Black Warranty: Lifetime When lining up your shot, every last ounce counts! Which is why we designed the Monstrum Tactical Slim Profile Series of mounts to be sleeker and lighter than ever. Crafted from lightweight 6061 aluminum, the mount weighs in at a mere 6 ounces. At a weight comparable to a set of lightweight rings, it provides the added rigidity and convenience of a one piece mount. The mount is built for standard 1 inch/30mm tube scopes for mounting to any standard Picatinny rail equipped rifle. The offset design provides an additional 2 inches of forward extension, allowing extra flexibility for optimum eye relief and shooting position. It comes equipped with an easy to operate quick release mechanism that allows for fast and easy attachment and detachment, allowing you to quickly mount or remove your rifle scope depending on need. The mounts attaches via two simple quick release levers rather than with sets screws and allen wrenches like standard mounts The mount is 5.5 inches in total length. The base is 3 inches in total length. There is 2.5 inches of spacing between the two rings. The height between the top of the base to the bottom of the scope rings is 1 inch, providing 1 inch of vertical clearance.