Precision-made sights for rifles, both with and without ramp bases. The blade is gracefully contoured, sloping toward the front. Made of steel and nicely blued to look good on any gun. GLOW SIGHTS: Two colors - Orange or Green .060" dia. optic rod. RAMP MOUNTED - .340 wide base. BARREL MOUNTED - 17/32" wide base. View Chart To Determine Overall Sight/Ramp Heights View Sight Selection Chart Mfg: Marble Arms SPECS: Steel, blue, polished finish. .620" (15mm) long. ORDERING: Select the sight height required using the Marbles and/or Williams charts and determine which Sight Style, Bead Type and Width is needed from the info above. Using the chart beside this copy, find the correct Marbles Sight a