The Patented [US Patent No. D684,647] Gear Sector™ offset flashlight mount was designed to provide a low profile, ergonomic solution for attaching a weapon light to a Picatinny rail. We designed the mount to fit perfectly flush with the Tango Down® rail panels for an uninterrupted rail space. This model fits the Surefire X-Series® lights. It can also be used to offset iron sights and MRDs. It comes complete with all mounting hardware, screws, hex keys, and Vibra-Tite® to make installation fast and easy. Mod 3 components feature an 1144 StressProof® heat treated full width steel index.