$40 shipped USPS CONUS - Used, take off green Tritium ledge style rear sight from Remington Recon Commander. U notch measures .155" in width. Sight fits a standard Novak Lo Mount sight cut and the rear blade is .325" high. Marking indicates sight was manufactured in 2016- tritium vials glow brightly. Sight has two set screws for locking in place, allen wrench included. PayPal f/f preferred.