Quick Change Front Blade To Match Your Shooting Needs
Steel base features a spring-loaded plunger that lets you select the front sight blade to exactly meet your shooting requirements. Each precision-machined sight blade quickly snaps into position. Select from Patridge or Ramp with a plain blade or Sight blades also fit S&W Classic models with quick change factory front sights, extra base not required.
Big Book Catalog, Issue:67, Page:309
SPECS: Steel base, black, matte finish or silver, hard chrome
finish. Base: ¼" (6.35mm) wide and high, 1.75" (4.5cm)
long. Blade: black, matte finish. .125" (3.2mm) wide. Requires
milling of barrel or slide.