  We investigate the possibility of obtaining sizeable R-parity breaking
interactions violating baryon number but not lepton number within
supersymmetric grand unified theories. Such a possibility allows to ameliorate
the naturalness status of supersymmetry while maintaining successful gauge
coupling unification, one of its main phenomenological motivations. We show
that this can be achieved without fine-tuning or the need of large
representations in simple SO(10) models.
