Walther Front Sight Extension Tube for 22mm Barrel

Walther Sight Extension Tube 22MM Diameter for KK200/KK300/KK500 9mm Dovetail for Walther Front Sights Use a Caliper or Micrometer to get an accurate barrel diameter measurement for ideal fit. Use this product to add or extend the 9mm front sight dovetail to your 22mm rifle barrel.  Technical data Material: Aluminum Dovetail: 9mm Hole Diameter: 22mm Length: 6 3/4″