monstrum low profile picatinny riser mount (0.5" h x 1.5" l), for red dots monstrum the monstrum tactical low profile riser mount is designed for use with scopes and optics, allowing for sight clearance of front sights. 0.5 inch high and 1.5 inches in length and with a picatinny standard rail mount, it will accommodate picatinny or weaver standard red dots and other optics. it secures and detaches quickly via one thumbscrew, with no tools required. crafted from aircraft grade aluminum, it is sturdy and lightweight, weighing in at a mere 1.2 ounces.