This Quantum AKS Mini L-Bracket from GLOBAL DYNAMICS UNITED is a rear L-bracket that can be stacked rearward on the Quantum Rig to increase mounting options. This L-bracket has 1/4"-20 and 3/8"-16 keyed mounting points on the rear and a centered vertical 1/4" pass-through trolly slot. The bottom fits the Quantum Rig's rear expansion M4 mount that attaches with included M4 mounting hardware. It also has additional M4 mounting on the right, left, and top surfaces.