Designed from the beginning with the goal of producing the perfect back up iron sights to SBR owners, the Bobro Engineering's LowRider sights are the lowest profiles and lightest weight sights available on the market today. Sitting at roughly 2/10ths of an inches thick, these sights won't interfere with optics, night vision, lights, or lasers, allowing shooters to make the maximize their accessories while still maintaining back up sights. Despite their minuscule dimensions, they assert plenty of full sized features like locking positions with push button, locking windage and elevation adjustment, plus they sit in AR height. These sights are in the home on a full sized rifle set of more traditional BUIS, which makes them ideal for any shooter wanting to slim down without sacrificing capability! These are nicely constructed from 6061 and the lightest on the market.