Checkout these Gear Sector Offset Light Mounts designed for the Surefire X-Series and Streamlight TLR-Series... "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.