The Monstrum Deadlock Series features a strong, lightweight design with strategically placed cuts to reduce weight and provide secure mounting for your rifle scope. It can be attached to any Picatinny or Weaver mount with custom locking bolts that fit seamlessly into your rail, ensuring zero hold against tough recoil. The mount frame is made of lightweight 6061 grade aluminum with hardened steel Torx mounting hardware to prevent bolt stripping. Deadlock Scope Rings are offered for 1 inch and 30mm rifle scope tubes. All Monstrum products come with a lifetime guarantee.