EGW Universal Radius Sight Mount Features The EGW .670-inch radius sight mount is machined from 7075 aluminum with a curved underside designed to match round receiver diameters between roughly 0.936 and 1.35 inches spanning a wide range of shotgun and rifle receivers. A slight gap is expected at the top of the radius between the receiver and the mount once installed which is normal for this style of universal base. The mount includes two 6-32 flat head screws and a 6-32 set screw and it is drilled to accept a Trijicon RMR or Holosun HS507C red dot sight directly. EGW notes that on models like the Benelli M2 and Stoeger M3000 the mount will work in the front screw set only using 8-40 screws while the Benelli Supernova requires the front set with longer 8-40 screws. Finished in a matte black hardcoat over 7075 aluminum the mount measures 1.78 inches long 1.1 inches wide and 0.335 inches high keeping a compact low-profile footprint on the receiver. EGW lists common applications including the Benelli Auto/Super Black Eagle/Vinci Browning A-Bolt 12 gauge Savage 210/212/220 Stoeger M3000/M3500 Winchester 1300 and SXP shotguns as well as Remington 700 722 40X 783 710/770 XP-100 and 4/6/7400/7615 rifles plus Savage centerfire rifles and the Winchester 70. This broad receiver-diameter compatibility makes it a practical option for adding a red dot to slug guns turkey guns and hunting rifles that otherwise lack a factory optics mount. EGW Universal .670 Radius Sight Mount Specifications Brand: EGW Material: Aluminum Color: Black Coating: Matte Black Hardcoat Mount Type: Picatinny Rail Overall Length: 1.780 Overall Width: 1.1 Overall Height: 0.335 Radius: 0.468 Red Dot Fitment: Trijicon RMR Holosun HS507C Common Fits: Benelli Browning A-Bolt Savage Stoeger Winchester Remington Available At: GrabAGun