The 45° Offset Weaver/Picatinny Mount from Firefield is designed to move sights and accessories away from the center-line of your long-gun to prevent interference with other scopes or sights. A typical use for this rail is to have a long-distance riflescope mounted conventionally, and a smaller close-to-mid range dot-sight mounted 45° on the offset rail. This dual-mount configuration allows for fast transition from near to far sighting by simply canting the rifle slightly without altering your basic shooting stance - ideal for 3-gun competition shooting. Other uses include mounting lasers, lights, or IR illuminators without interference with sights and scopes. Made of an aluminum alloy with a matte black anodized finish, the 2.17" (5.5cm) long rail can mount on either side of the rifle's primary rail and fastens with two Allen bolts.