Sporting Rear Sight Base with three styles of Uprights. Perfect as replacement sights for customizing the sight picture, or adding adjustment to fixed sight guns. Fits standard 3/8" dovetails; available with Semi-Buckhorn Uprights. Mfg: Marble Arms SPECS: Dovetail Model – Total heights:#67 .300" (7.6mm) -.510" (12.9mm).
