Thanks to Tommy Geraci, one of the blog readers for making this review!
ACE IN THE HOLE
Williams Gun Sight Co. has a variety of sights for shotgun, rifle and handgun platforms. I will begin this review with the W.G.S. Co. Ace In The Hole fiber optic ghost ring with an integrated 1913 picatinny rail for the Remington 870 shotgun. The Ace In The Hole is designed for drilled and tapped receivers. This ensures a rock solid fit which further helps to maintain a constant zero. Gunsmithing is required to drill and tap the receiver unless the Remington 870 has already been drilled and tapped. Ensure that the screws included will work with a previously drilled and tapped receiver by calling Williams Gun Sight Co. and asking them directly.