The mbus pro offset sights are part of an effective aiming system to supplement magnified optics on m1913 picatinny mounting surfaces.In the event of a damaged or nonfunctional primary optic, or a close target, rotating the rifle 45 degrees provides the shooter with a fully-featured iron sighting solution.It features an all steel construction, case hardened and finished with melonite qpq, and windage adjustable with low-profile knob no tools required.Made in the usa.Rear Color: BlackFrame Material: SteelFrame Color: BlackFirearm Fit: AR PlatformBase Configuration: Picatinny RailStyle: FoldingRear Material: SteelWindage Adjustment: YesElevation Adjustment: Yes