LPA SG4 front Ramped Shotgun sight with interchangeable blade system, this one supplied with the Tritium dot sight blade. All CNC machined from steel bar-stock. Ramped style front blade at 1.070” from bottom of radius to top of interchangeable blade. This is a “Solder on Style”. Will work with most brands of Shotguns, such as Mossberg, Beretta, Benelli, Browning, Winchester, Ithaca….etc.. with barrel diameters ranging from .819” -.885”. Professional gunsmith quality.