HOLOSUN HS503CU Paralow Red Dot Sight. The item "HOLOSUN HS503CU Paralow Red Dot Sight" is in sale since Saturday, October 9, 2021. This item is in the category "Sporting Goods\Hunting\Scopes, Optics & Lasers\Red Dot & Laser". The seller is "mikelee202084" and is located in Cary, North Carolina. This item can be shipped to United States.