Troy Tritium Folding Front Battle Sight M4 Black. target acquisition is made possible in low or no light conditions. This sight is designed to work on same plane rail systems only. Will not work with a railed gas block that is higher or lower than the receiver. We offer a complete line of Troy Tritium & Fiber Optic Night Sights. For our complete selection of products by Troy on sale please visit our Troy Industries page. For more Tritium & Fiber Optic Night Sights please visit our Tritium & Fiber Optic Night Sights store section. Specifications for Troy Tritium Folding Front Sight - M4: Manufacturer: Troy Color: Black Condition: New Gun Model: M4 AR-15 Front Sight Color: Tritium Fabric/Material: 6061-T6 Aircraft Aluminum Gun Type: Rifle Mount Type: Picatinny Finish: Hardcoat Anodized Attachment Type: Picatinny Adjustment Click Value: 0.5 MOA Features of Troy Tritium Folding Front Sight M4: Sight can be moved or taken off without permanent modification to the firearm A stainless-steel cross-locking system ensures sights remain upright and zeroed under extreme combat conditions No limited sight orientation due to low light conditions Front post is centered between two tritium points of reference to allow for proper alignment Package Contents: Troy Tritium Folding Front Sight M4 What firearm models does the manufacturer say Troy Tritium Folding Front Sight - M4 is compatible with? The manufacturer says that Troy Tritium Folding Front Sight - M4 is compatible with AR-15 M4Troy SSIG-FBS-FMBT-01: Tritium Folding Front Battle Sight M4 Black