KNS Precision M1 Garand Standard Crosshair Black. 240 aperture. Crosshair Size .010 / .020 Diameter. Crosshair Material Heat treated. Installation Requires light gunsmithing. Machine or file post from original sight and install. Held in place by original sight screw. No modifications to gun necessary. Specifications for KNS Precision M1 Garand Crosshair Front Sight: Manufacturer: KNS Precision Color: Black Country of Origin: USA Package Contents: KNS Precision M1 Garand Crosshair Front Sight KNS Precision GARANDST: M1 Garand Standard Crosshair Black