HIVIZ(R) Ultra Narrow Magnetic Shotgun Sight. Fits shotguns with ribs from .171″ to .265″ (11/64″ to 17/64″) (4.2mm to 6.7mm). Features one Green” non-replaceable LitePipes.
Hi-Viz Magnetic Front Sight, Fits Shotgun Rib .171″-.265″, Ultra Narrow, Green S200-G