  The nuclear recoil effect on the ground-state $g$ factor of highly charged
boronlike ions is considered within the relativistic framework. The
interelectronic-interaction contribution is evaluated within the Breit
approximation employing two independent approaches: the second-order
perturbation theory and the configuration-interaction Dirac-Fock-Sturm method.
The uncertainty of the nuclear recoil $g$-factor contributions is significantly
reduced, especially for low- and middle-$Z$ ions.
