Lion Gears Low Profile Tactical Picatinny/Weaver 90 Degree Angle Pro Mount, 2.16" Long with 5 Slots 90 Degree Angle, 2.16" Long with 5 Slots Sufficient Clearance For Both Top and Side Mounting Space System Oriented Design to Build a Flexible and Compact Bridge Mount Systems when Use with Lion Gear's Bridge Mount Robust Compact Steel Locking Plate & Screws - No Bulky Screws and Knobs! Threaded into Steel, not Aluminum Where Troubles Bound to Happen! Flat-Top Saddle Height: 0.19"