The NcSTAR MDC30 30mm Cantilever Ring Mount delivers exceptional stability and adaptability for your firearm optics. It is engineered to provide optimal eye relief while allowing extra rail space for attaching magnifiers or iron sights, ensuring an ideal setup for shooting enthusiasts. Perfectly compatible with both 30mm and 1-inch scopes, this aluminum mount weighs only 3.3 oz, making it a lightweight but durable choice. Designed specifically for 223/556 rifles, it guarantees seamless co-witnessing with iron sights, enhancing your shooting precision. Forward mounting for improved eye relief and additional rail space Compatibility with 30mm and 1-inch scopes, plus reflex optics Height optimized for 223/556 rifles for effective co-witnessing Secured fit with slotted thumb nut installation Lightweight, all-aluminum construction Dimensions: 2.4" (L) x 2.8" (W) x 1.8" (H) Overall weight of just 3.3 oz Maximize your shooting experience with the NcSTAR MDC30 Cantilever Ring Mount.