M-Series magnetic front sight with Screw Attach rear sight, fully adjustable for windage and elevation, this sight can help you get your favorite slug or turkey gun dialed in. Remove the rear sight and the front sight can be used alone for upland birds, waterfowl or target shooting. All sets come with a green and orange front LitePipe and rear green pipes. Wide Model (C400-1) fits ribs from .328 to .437 (21/64 to 7/16) (8.3mm to 11.1mm).