Made in America, Talley Manufacturing's RMR Mounts are machined entirely from high grade 6000 series alloy and protected with a hard-coat anodizing to 65 Rockwell ensuring the craftsmanship of these Direct RMR Mounts last the lifetime of your firearm. The Winchester Super X Series RMR Mounts are all designed and manufactured with precision to fit your shotgun with the industry's tightest manufacturing tolerances. These RMR Direct mounts provide a mounting platform for RMR foot print Red Dot optics eliminating the need for a picatinny rail or other adapters for your specified firearm. Whether you are looking for to upgrade your favorite turkey gun or tactical shotgun, this RMR Mount offers a light weight minimized mounting solution for RMR Foot print optics. American Made, Lightweight 6000 series Aluminum Alloy Fully CNC Machined Includes mounting screws and wrench. Designed to fit Winchester Super X Series shotguns (SXP, SX2,SX3 SX4). Uses two most rearward mounting holes only for proper red dot sight placement. Minimized size to accommodate RMR Foot print optics. Includes Mounting Screws Length: 1.78" Width: 1.1" Mounting screw hole spacing: .86"