All Monstrum Tactical Lockdown Series Riser Mounts come with a lifetime warranty. Includes: 13 Slot Picatinny Adjustable Riser Mount, Screws, Nuts, Hex Wrench Materials: 6061 Aircraft Grade Aluminum Compatibility: Picatinny Weight: 7.1 oz Length: 5.75 in Color: Black Warranty: Lifetime Raise your optic to the next level with the Monstrum Tactical Lockdown Series Adjustable Height Riser Mount! Our exclusive adjustable height design allows for absolute precision placement of your optic based on your rifle setup or preferred cheek weld! The riser can be adjusted incrementally via two locking screws from 0.875 inches up to 1.125 inch of rise, measured from rail surface to rail surface. Built for use with Picatinny or Weaver base optics, our mounts will give you just the right amount of rise for optimal scope positioning and clearance over your front sights. The riser is available in 3 Slot/1.75 inch or 13 Slot/5.75 inch versions. It accepts all Picatinny or Weaver based scopes, red dots, or optics.