Magpul MBUS Gen 2 Flip-Up Sight Set provides a reliable back-up aiming solution for any Picatinny rail system. Constructed from durable, impact-resistant polymer, these lightweight sights feature a spring-loaded flip-up design that can be activated from either side or by pressing the top. The rear sight includes a dual aperture and is adjustable for windage, while the front sight is adjustable for elevation. Their low-profile design ensures they remain out of the way when folded, making them an essential addition for tactical setups. Measurements: • Rear Sight Length (Folded): 2.5" • Front Sight Length (Folded): 2.25"