XS Sights R3D, 2.0 Night Sight, For HK VP9 OR Standard Height, Orange Front Outline, Green Glow Front/Rear HK-R201P-6N. Their second-generation R3D night sights are engineered to give you a brighter, stronger set of sights. Easily install their sights with a set that requires 50% less force for installation. R3D sights are built to withstand years of EDC use and abuse. The set drives focus downrange using a serrated blacked-out rear sight and a dual-illuminated glow photoluminescent front sight. R3D sights are the brightest notch and post option for fast and accurate shooting in bright and low light. Glow front and rear with high contrast glow dot. Photoluminescent glow dot absorbs ambient light and glows in low light. Wide notch rear with serrations and anti-reflective lens. Corrosion resistant Black Nitride surface finish. Traditional 3-dot glow, notch and post, sight picture. Proudly manufactured in Fort Worth, TX. Fits HK VP9 OR. Manufacturing defects vary by individual Brands. We will give instructions as what is to be done on a case by case basis.