Night Fision Optics Ready Stealth Series Sights Features The Night Fision Optics Ready Stealth Series Sight Set breaks from the industry norm of aluminum sleeves and painted-on white rings by using a patented injection-molded sleeve design that holds the tritium vials securely while creating a brighter more durable ring. Night Fision calls this ring The Perfect Dot and it is built to provide maximum visibility whether the shooter is acquiring the sight in daylight or total darkness. A domed lens collimates the tritium rays for a sharper more defined sight picture compared to flat-lens designs. The front sight uses a yellow fluorescent ring around green tritium giving a fast color reference that stands out from the black rear sight at a glance. These sights are CNC machined from high quality steel and finished with a black nitride coating that improves wear resistance and corrosion resistance over standard factory sights a meaningful upgrade for a pistol carried daily. Serrated front and rear sight faces cut glare for a cleaner sight picture in bright conditions. Built specifically for the Walther PDP Compact 4 inch Full Size 4 inch and Full Size 4.5 inch models these sights are manufactured in the USA using Swiss tritium for reliable illumination that lasts for years. For Walther PDP owners who want some of the brightest tritium night sights on the market the Night Fision Optics Ready Stealth Series Sight Set is available for sale at GrabAGun. Night Fision Optics Ready Stealth Series Sights Specifications Manufacturer: Night Fision Model: Optics Ready Stealth Series Sights Type: Sight Set Front Sight: Yellow Fluorescent Ring Green Tritium Serrated Rear Sight: Black Serrated Square Notch Blade Height: .290-.313 Material: Steel Finish: Black Nitride Color: Black Warranty: Mfg Limited Lifetime Compatible Hosts: Walther PDP Compact 4 Full Size 4 Full Size 4.5 Available At: GrabAGun