Could be the Raptor uses ABC bushings as I was reading that my RM element uses plastic bushings as well.
description: ABC a self-lubricating plastic bushing injection molded from a blend of thermoplastic materials, embedded with reinforcing fibers and solid lubricant.
A RM manual instructs to lightly lube "ABC"
bushings at assembly and infrequently after.
ABC Bushings https://www.igus.com/wpck/6410/plastic_bushings
iglide® plastic bushings have a low wear rate, superior chemical resistance to sintered bronze bearings, and operate quietly. They are dirt, dust, UV, and corrosion resistant and have a high load capacity.