The xs tritium stripe front sight for the ar features precision machined stress proof steel, a vertical tritium vial and white outline to provide front sight visibility in any lighting condition.Square top post is 0.105" wide.Each full rotation of front sight gives a 5" shift at 100 yards.Fits ar front sight housing with front sight detent at 3, 6 or 9 o'clock.Does not fit arms back up sight; the blade, front to back, is too long to allow the tower to fold into the down position.Made in the usa.Type: FrontFrame Color: BlackFirearm Fit: AR-15Style: Mil-SpecFront Material: TritiumFront Color: GreenFirearm Type: Rifle