Armed Ops Tactical AR15 Quick Deploy System Micro Series Military Grade Flip Up Iron Sights Precision Machined from High Strength Aircraft Aluminum, Automatic Deployment Front and Rear Combo Set Flip up Backup Ar15 Flattop A2 Post Back up BUIS Iron Sight Picatinny & Weaver Mount AR-15 M4 M-4 M16 223 308 Military Grade Spring-loaded sights deploy at the push of a button to provide instant backup sighting. Quick Deploy System locks securely and requires a firm, positive press of the button to deploy or retract the sight, so it wont accidentally activate when bumpedthese sights stay where you put them. Front Sight A2 offers easy post elevation adjustment, Rear Sight offers Dual Aperture Windage Adjustment Designed for Close Quarter Battle; Military grade ultra fast push button deploy front and rear flip up sights Spring-loaded sights deploy at the push of a button to provide instant backup sighting. Quick Deploy System locks securely and requires a firm, positive press of the button to deploy or retract the sight, so it wont accidentally activate when bumpedthese sights stay where you put them. 6061 Aircraft Aluminum and T6 Heat treated Aluminum body, Level 3 Mil Spec Hard Anodization