EGW Bomar Sight Mount Features The EGW Bomar Sight Mount replaces a Bomar-pattern adjustable rear sight and provides a direct interface for a Trijicon RMR or Holosun HS507C red dot sight. It ships with two 6-32 flat head screws and a 6-32 x 3/16 set screw and installation only requires a 5/64-inch allen wrench making it accessible for most owners to install without a gunsmith. EGW recommends applying blue Loctite to the mounting screws and torquing them to 15 in-lbs to keep the optic securely zeroed through repeated recoil. Because the mount uses the existing Bomar dovetail cut the factory rear sight can be reinstalled at any time if the optic is removed. Machined from 7075 aluminum and finished in a durable matte black hardcoat the mount is built to hold up under sustained competition or duty use. At 1.78 inches long and 1.1 inches wide it closely matches the factory Bomar sight footprint rather than adding unnecessary bulk to the slide. EGW also notes fitment on the Baby Desert Eagle post-2006 and EAA Witness Elite Match while noting the mount does not fit Rock Island 1911 pistols. This makes it a straightforward option for Bomar-cut 1911 and similar pistols looking to add a compact reversible red dot sight. EGW Bomar Sight Mount Specifications Brand: EGW Material: Aluminum Color: Black Coating: Matte Black Hardcoat Mount Type: Dovetail Overall Length: 1.780 Overall Width: 1.1 Red Dot Fitment: Trijicon RMR Holosun HS507C Available At: GrabAGun