Change your lens quickly with this Swing-Away Support for Matte Box from SmallRig, which enables swing-away functionality while using a SmallRig matte box. It allows the matte box to swing away to change your lens without needing to remove the matte box from the rig.

The swing-away support attaches to the matte box using the included 1/4"-20 mounting screw, and it allows you to mount the assembly onto 15mm LWS rods. The arm can be adjusted vertically up to 1.2" and can slide forward up to 1.4" to fit the matte box onto the lens.