HIVIZ Remington ETA Fiber Optic Sight Hi-Viz Magnetic shotgun sights for Remington's Remington ETA-Easy Target Acquisition Fits all Remington shotguns with 9/32" vent ribs Shoot better in the field Easy to install with magnetics Remington ETA front sight Includes interchangeable green LitePipes 2 round and 1 triangular Comes with pinch pouch carrying case Fits all ribbed 870 1100 and 1187 Remington shotguns HiViz recommends gunsmith installation for all dovetail sights. Due to manufacturing tolerances, some firearms may require additional fitting.