Spring-loaded plunger and detent, located in the “Masterpiece” Banded Front Ramp, hold the sight blade into the longitudinal dovetail; set screw firmly locks the sight blade in place. Styles available: S-5 - 3⁄32" x 11⁄16" long red fiber optic light pipe.
Big Book Catalog, Issue:73, Page:316
SPECS: Steel, blued. Base - 7⁄8" (22mm) long, S-4 is ¾" (19mm) long; 7⁄32" (5.5mm) wide. Blade - 9⁄16" (14.3mm) long. Height - shown in chart is from bottom of dovetail to top of blade. S-5 Light Pipe - 3⁄32" (2.3mm) Dia. x 11/16" (17mm) long.