Sheared landing gear shaft (need help identifying)

[ADP1723]

I have a 2007 Montana Mountaineer 342pht. I was just trying to extend my landing gear, but the shaft that comes out of the landing gear leg and through the gearbox was shared (see pics below). So can anyone confirm if I'll have to replace the whole landing gear leg to fix this, or if there is perhaps another way to replace this shaft? Also, does anyone know what this part would be called?