The original one-piece JP Flat-Top Scope Mount attaches to any standard Picatinny rail and features an integrated recoil lug for stability. Ideal for AR applications, its intermediate height can accommodate up to a 56mm objective while the mount rings will fit any 30mm scope tube by default or any 1" scope tube when used with the included ring adapters. One mounting strap can also be replaced with the JPA-SM30/1C for piggyback mounting of the JPoint Microelectronic reflex sight with the optional use of the JPA-GUARD protective wings. Weight: 6.9 oz. Height to centerline: 1.47" over rail Approx. total height over rail: 2.70" (small-frame), 2.80" (most large-frame) Attachment: 5x countersunk flat-head screws on clamp piece, 4x 6-32 cap screws on each ring strap (Torx keys included)