Burris AR-Signature QD P.E.P.R. Scope Mount/Ring Combo features a 30mm tube diameter and 1.5 high mount height designed for AR platform firearms, including AR-15 models. Constructed from steel with a matte black finish, this 5 long and 2.13 wide cantilever mount weighs 10.33 oz and includes scope rings. It provides roughly 2 of forward scope placement on flat-top receivers. Featuring dual throw-levers, this quick-detach mount interfaces with Picatinny rails and guarantees 1/4 MOA return-to-zero capability. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.