A mount is taught which incorporates a Picatinny rail and a handguard interface. The mount has an offset L-shape which includes an integral Picatinny rail portion for accessory mounting and an integral threaded handguard adapter portion that attaches to an existing firearm handguard. The mount has a body with the handguard adapter portion protruding outwardly on a front side, a body vertical leg and the Picatinny rail formed integrally on the bottom of a body horizontal leg. The handguard adapter has a hollow inside diameter adapted to conform to a handguard interface surface and a lockring is provided for manual adjustment of the handguard. A second embodiment omits the legs and incorporates an offset shape.