Night Fision Stealth Features The Night Fision Stealth sight set uses the company s patented injection molded sleeve design instead of the aluminum sleeves and painted-on rings found on older-style night sights. That sleeve holds the tritium vial securely in place while forming what Night Fision calls The Perfect Dot a brighter and more durable ring that stays visible in both bright daylight and total darkness. A domed lens collimates the tritium rays for a sharper more defined sight picture at the moment it matters most. The front sight s orange ring draws the eye immediately under stress which is exactly what a self-defense pistol needs on a Walther PDP. Construction starts with high quality steel CNC machined for tight tolerances and a consistent sight picture from one unit to the next. A black nitride coating is applied over that steel to improve wear resistance and guard against corrosion from sweat holster friction and weather exposure. The rear sight is finished in plain black with no tritium vial keeping the shooter s focus locked on the illuminated front dot rather than splitting attention between two glowing points. Night Fision recommends gunsmith installation for proper fit and alignment and this set is available for sale at GrabAGun for Walther PDP shooters who carry for duty or personal defense. Night Fision Stealth Specifications Manufacturer: Night Fision Model: Stealth Type: Tritium Night Sight Set Compatible Hosts: Walther PDP Compact 4 PDP Full Size 4 PDP Full Size 4.5 Material: Steel Finish: Black Nitride Front Sight Color: Orange Rear Sight Color: Black Installation: Gunsmith Recommended Warranty: Manufacturer Limited Lifetime Available At: GrabAGun