The SmallRig Extension Rig for Sony FX3 XLR Handle extends the handle’s grip by 1.2" and allows the addition of accessories via multiple 1/4"-20 and 3/8"-16 ARRI-style accessory threads, a shoe mount, and a NATO rail. It installs onto the back of the handle using two included 1/4"-20 screws, and the NATO rail is removable.