Includes: 1 inch Offset, 2 inch Offset, or Inline Picatinny Scope Mount Materials: 6061 Aircraft Grade Aluminum Compatibility: AR-15, Rifles with Picatinny rails Centerline Height: 1.5 in (Top of Picatinny rail to center of scope lens) Weight: 3.70 oz - 3.9 oz Diameter: 30 mm or 1 inch 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.