Leapers spring-loaded low profile flip-up rear sight for ar15 is constructed of aluminum with a black finish and a low profile.Spring-loaded posi-lock push button activation automatically deploys sight tower and prevents sight tower from collapsing when deployed.Features tool-free windage adjustment and dual apertures ideal for a variety of different scenarios.Utilizes a single locking torx screw, 3mm locking bolt and mounting deck.Torx locking plate recommended torque value: 35 in-lbs.Type: Flip Up RearFrame Material: Aircraft AluminumFrame Color: BlackFirearm Fit: AR-15Base Configuration: Picatinny RailStyle: Flip Up Back Up Rear SightFirearm Type: AR Platform