Williams FP Receiver Sights have an internal micrometer for a click-at-a-time adjustment and are made from rust-free aluminum. The sight is marked with white tick marks for easy adjustments of both windage and elevation. Includes 1 aperture, which has an outside diameter of 3/8" and an inside diameter (peep size) of .093". The aperture is knurled for easy installation/removal. Comes with a durable blue-black anodized finish and weighs only 1-1/2 oz. Please note that some rifle receivers may require drilling and tapping for installation.
Winchester 1200, 1400, 150, 190, 250, 255, 270, 275 and 290. Ithaca 37, Remington Sportsman 48, 58, 11-48 and most flat receivered pumps and autoloaders
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