Made in the U.S.A., the Combat Fixed Front sight is compatible with your AR-15, M4, M16. It is constructed of billet 6061-T6 aluminum, is Mil-Spec height, M4 sight picture using standard A2 front sight post. 1.5 MOA per click of sight. Black hardcoat anodized finish. Serrations on back of sight housing. Torque clamp to 35in/pounds.