Gives the J.P. J-Point, and the old Tasco Optima and Fire Point sights, the lowest possible mount for fast eye alignment and sight pickup. No machining required; fits the factory dovetail. Four locating studs lock sight to base. BM #1 fits slides cut for "melted-in" sight. S&W Revolver fits factory drilled and tapped guns. Sight & Shims available for J-Point Mount. Mfg: J P Enterprises SPECS: Aluminum, black anodized, matte finish.