Troy industries tritium battlesights are designed to eliminate the poor sight orientation that is typical in twilight.Troy's hk front folding battlesight is easy to install and deploy, with no levers or springs to fumble with.No tools required for adjustment.Features- sight can be moved or taken off without permanent modification to the firearm, stainless steel cross-locking system ensures sights remain upright and zeroed under extreme combat conditions and a push button folds the sights securely out of the way until you need them again.Each click adjusts.50 moa.Type: Tritium Folding FrontFrame Material: AluminumFrame Color: Black Hardcoat AnodizedFirearm Fit: AR-15Base Configuration: Picatinny RailStyle: FoldingFront Material: TritiumFront Color: GreenElevation Adjustment: YesFirearm Type: AR Rifle