Period Looks, Superb Accuracy
Fine-tune your Marble tang sight for specific shooting situations by installing the perfect-sized aperture. ½" and ¾" diameter apertures in six hole sizes make it easy to obtain the best accuracy and target acquisition for long and short range, hunting or target shooting applications.
Big Book Catalog, Issue:65, Page:280
New Product Supplement, Issue:565, Page:015
SPECS: Steel, blued finish. ½" (1.3cm) diameter apertures - .055" (1.4mm), .076" (1.9mm), and .102" (2.6mm) hole sizes. ¾" (1.9cm) diameter apertures - .032" (.813mm), .043" (1.1mm), and .055" (1.4mm) hole sizes. 10-32 thread fits Marble’s Tang Sights.