Includes: Slim Profile Series Offset Picatinny Scope Mount V2 Materials: 6061 Aircraft Grade Aluminum Compatibility: AR-15, Rifles with Picatinny rails Weight: 3.7 oz Diameter: 1.00 in or 30mm Length: 5.50 in Base Length: Split 3.00 in Color: Black Warranty: Lifetime The next generation of Monstrum Scope Mounts has arrived! With a new ultra-lightweight design, sleeker more aggressive machining, and more mounting options than ever - the Monstrum Razorclaw Series provides rock-solid mounting of your rifle scope at the absolute minimum amount of weight permitted by the laws of physics. The lightweight design, evolved over several generations of Monstrum scope mount products, brings the weight down to a mere 3.7 ounces. - 25% lighter than our previous generation Slim Profile Series scope mounts.