TRUGLO TruPoint XTREME Universal Shotgun Sights with Luminescent Alignment Level and Elevation Ramp for Ribbed Shotgun For the serious turkey and deer hunter. Universal fit for ventilated rib shotguns. Rifle-style full elevation/windage adjustment. Includes two interchangeable rear sights. All-metal construction. Full windage and elevation adjustment. Front diameter is .060"; rear diameter is .029". Endorsed by the National Wild Turkey Federation.