No rail? No problem. Let's face it: many popular shotguns aren't drilled and tapped for a conventional scope base or Picatinny rail. Thankfully, WarneA(R)'s innovative Shotgun Rib Optics Mount attaches directly to any vented barrel rib between 6mm and 10mm wide to provide a low-profile universal mounting base for a ton of popular reflex sights. So even if your shotgun isn't drilled and tapped and doesn't come with a Pic rail, you can still mount a red dot. Pretty slick if you ask us. Allows you to mount a red dot or reflex sight on a shotgun rib Fits vented ribs between 6mm and 10mm wide Provides a low-profile universal mounting plate that fits a ton of popular reflex sights (see the list below) Rugged lightweight aluminum construction Designed and built in USAFits the following reflex sights: Burris Fast Fire 2 & 3 CMORE RTS & STS Docter Eotech MRDS Holosun 507c/407c V1 & V2 versions Insight MRDS Leupold Delta Point & Delta Point Pro Shield RMS Sig Romeo 3, 3 Max & 3 XL Trijicon RMR TruGlo UTG Reflex Micro Dot Vortex Razor And others with same hole pattern(s) Order today!